Toxic Waste Canister: From Household Item to Glowing Prop

In this course, you’ll transform a basic household item into a creepy glowing canister prop worthy of any con. This live online class walks you through prepping, painting, and lighting techniques step by step, giving you hands-on experience in prop-building fundamentals. Whether you're crafting for cosplay, horror, or sci-fi, you’ll finish with a fully functional and eerie glowing prop to show off.

🗓️Saturday, July 19 at 12pm (ET)

$25 / 90 min. course

By the End of the Course

By the end of this course, you’ll know how to transform a common household item into a realistic toxic waste canister prop, complete with dramatic glowing effects. You’ll learn how to weather and paint for a gritty, industrial look, and how to install battery-powered LED lighting for maximum impact. These techniques can be used again and again to build other light-up props for cosplay, photoshoots, or film.

Learning Objectives

Prep and repurpose everyday objects
Add texture and grime for realism
Wire and install glowing LED lights
Finish with professional painting and weathering

Supplies Needed

Plastic jar with screw on lid
Foam 3mm and 5mm
Sandpaper (fine/light)
1 led fairy light
Contact cement
Diffusing foam

Tools Needed

Dremel
Hot glue gun

Need Supplies or Tools? We Got You- plus a Bonus!

Supplies will soon be available from our sibling company, The Cos Shop—your one-stop retail destination for cosplay makeup, SFX materials, and crafting essentials. Once the shop opens, you’ll just search for the items on your supply list, add them to your cart, and have everything shipped right to your door.

Your Instructor: Yoshi Cosplay

Award-winning cosplayer Yoshi Cosplay is best known for her incredible foam armor builds, with a special focus on fine details that elevate a costume to competition level. With years of experience crafting durable and dynamic armor pieces, she’s become a go-to mentor for cosplayers looking to step up their foam skills. Yoshi’s passion lies in helping others gain confidence working with foam — especially when it comes to sculpting, layering, and mastering the art of foam clay.