Treat it like people do with Deviantart, Etsy, girly stuff like that. It sees some success. Start slow, sell basic stuff like designs and patterns. Small amounts of completely custom stuff. See what sticks. If you can put some stuff out for fandoms, like twitch streamers, lesser known youtubers or other random stuff that won't get a big corp to slap you with a copyright and you'll probably get decent business.
...You know, so long as you're innovating on a design and you ask permission or talk with the person(s) you're making fan merch for.
Kickstarter probably won't work till you've established a brand, got some word out and stuff; sadly leeching on a fandom is the fastest way.
I know a girl from texas who started selling aprons of all things at $50 and it started paying off the entire vacation when she went to cons. Blew my mind.