If you grew up in the 1980s or '90s, it's very likely that you came of age with Lisa Frank-branded school supplies, party favors, stickers, beach towels, and all manner of rainbow-splashed products.

Lisa Frank saw a resurgence in popularity in the early 2020s thanks to collaborations with big names like Crocs and celebrities like John Mayer. But, it wasn’t all rainbow pandas and surfing ...