Whether you’re a collector or a parent looking for a sensory activity, finding the Hot Wheels Slime series—often called "Hot Wheels Monster Truck Roarin' Rumble" or "Hot Wheels Color Reveal"—can be a bit of a treasure hunt. Where to Buy Hot Wheels Slime Usually has the best stock of multi-packs and sets.

Check the toy aisle near the Monster Trucks; they often have exclusive sets.

These packs often include a small container of slime.