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Welcome to

Katie's Party Lab

colorado's creative events

Outdoor kids paint party setup with butterfly canvas art, lavender table décor, white aprons, and mini easels — creative paint station activity by Katie’s Party Lab in Erie, Colorado.
Taylor Swift–themed girls’ sleepover party setup featuring white indoor teepee tents, pink balloon garland, cozy themed pillows, LED lights, and personalized trays for each guest — perfect slumber party idea by Katie’s Party Lab in Erie, Colorado.

I'm all about bringing people together, sparking creativity, and making childhood feel magical. From cozy sleepovers to hands-on activities and dreamy picnics, I help you celebrate birthdays, team events, or any sweet season of life.
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As a former NICU nurse, I know how much the little moments matter. Every party – whether it's race cars or rainbows – is designed to make kids feel seen, celebrated, and special (grown-up kids too).
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Less stress for parents. More fun for kids. Memories for everyone.

Katie Semenas, owner of Katie's Party Lab, smiling in patriotic sunglasses and a red, white, and blue trucker hat in front of a vibrant community pool on a sunny summer day in Erie, Colorado. Styled with bold red striped earrings and a navy top, perfect for festive family events, kids' parties, and summer celebrations.

Meet Katie

A former NICU nurse turned full-time magic maker, creative crafter, and mama of three. For years, I cared for the tiniest fighters and their families during some of their most vulnerable moments. That experience taught me how precious childhood truly is, and how important it is to celebrate every milestone, big or small.

I started Katie’s Party Lab with one goal in mind: to give busy parents the chance to enjoy those milestones without the stress of planning. From spa parties and sleepovers to creative workshops and our wildly popular patch parties, every event is built with the same care and attention I once gave my NICU babies—only now it comes in the form of celebrations, creativity, and memories that last long after the party ends.

Whether it’s a birthday, a backyard picnic, or just an excuse to gather friends, I’ll handle the details so you can focus on what really matters—being fully present and making memories with your child.

Signature Party Options

Movie night sleepover setup with white teepee tents, red and gold balloons, popcorn trays, and Hollywood-themed pillows — cinematic slumber party design by Katie’s Party Lab in Erie, Colorado.

SLEEPOVERS & SLEEPUNDERS

  • Teepees 

  • Air mattress and fitted sheet

  • Decorative Pillows

  • Throw blanket

  • Bed tray

  • LED lanterns or lights

  • Themed decor

Pink spa party setup with satin robes, low picnic table, beauty-themed table décor, and plush pillows — kids spa birthday party by Katie’s Party Lab in Erie, Colorado.

Spa Parties

  • Mini Facials 

  • Nail Polish Bar

  • Temporary Tattoos

  • Satin Robe Rentals

  • Sparkling Cider Toast

Erie Colorado Halloween party setup with ghost decorations, outdoor DIY hat decorating station, and custom patch party table — kids craft and event setup by Katie’s Party Lab.

Patch Parties

  • Choice of Item to Patch

  • Patch Bar Setup

  • Themed Decor

  • Professional Heat Pressing Station

  • Wearable Party Favor

Outdoor How to Train Your Dragon paint party setup with blue tablecloth, easels, character canvases, and art supplies — creative kids birthday painting activity by Katie’s Party Lab in Erie, Colorado.

Paint Parties

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  • Custom Pre-Designed Canvases

  • All Painting Supplies

  • Aprons

  • Themed Decor

  • Take-Home Masterpiece

  • Delivery, Setup & Cleanup

...and more!

STUFF-A-BUDDY WORKSHOP

Winnie the Pooh–themed Build-A-Bear activity with plush teddy bear, adoption certificate, and mini T-shirt — adorable kids birthday party setup by Katie’s Party Lab in Erie, Colorado.

HOW IT WORKS

1

Submit Your Request

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Fill out the booking form with your preferred date, party type, and details.

2

Let’s Chat!

 


I’ll reach out to confirm availability, go over your vision, and answer any questions.

3

Secure Your Date


Your party is officially booked once the deposit is paid and the contract is signed.

4

Celebrate in Style!


Sit back and relax while I bring the magic, creativity, and fun straight to you!

Kind Words

Jennifer A.

Katie’s Party Lab created the most magical spa-tacular birthday for my daughter’s 8th, and I couldn’t be happier with the experience. Every single detail was exquisite—thoughtful, fun, and beautifully executed. It wasn’t just my daughter and her friends who were over the moon; the adults were raving about it too!

It was one of those rare moments that felt like pure joy in real time, and I know it’s a memory we’ll all carry for years to come. If you’re on the fence about booking with Katie’s Party Lab, I can say wholeheartedly—it’s absolutely worth it. The girls had endless entertainment, I got to watch my daughter and her friends glow with happiness, and I even felt like I tapped into my own inner child.

A wonderful, joy-filled experience from start to finish. Highly recommend!

SARAH F.

Katie was absolutely wonderful to work with! She helped plan my daughter’s sleepover birthday party and was flexible and accommodating with changes along the way. The final result was fantastic—my daughter and her friends had an unforgettable time! I highly recommend Katie to anyone looking for help planning their next party.

Mikaela G.

Absolutely worth it!
I love the big celebration ideas but then spend weeks stressing to make it all happen, only to be disappointed. Working with Katie was the best decision ever. Katie did all the work, all the planning, took away all the stress. She made things easy, went above and beyond my plans and expectations, and the kids loved it all. This will be my party go to from now on for sure!!

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