The mushroom motif in various products, including jewelry and textile design, is very popular in Cottagecore culture, which is very popular with young girls and sung about by Taylor Swift. If you don’t know what Cottagecore culture is, here is a link to Wikipedia on it (I didn’t know either). If you want to make more money selling crafts, I’d do a little research on what else is popular in Cottagecore. Mushrooms are apparently popular in Goblincore culture too and maybe another somethingcore culture or two. Some of this started around the pandemic.
Also, mushrooms are apparently a popular symbol of resilience in the LBGTQ+ community: