While it's a bit of a bugger to learn, you can always make a thread on F95zone to host a free demo and use it's links to patreon, substar or other sites for a "hey if you like this, maybe throw me $2 a month to help dev costs"
Viewing post in 0.4 Update + Payment Processor Fiasco comments
Nate has already stated in the in-game dev notes that he's still a bit iffy about using Patreon since the artwork was commissioned by him to other artists and since he doesn't do monthly updates, he finds it wrong to make people pay him monthly only to, and I quote, "run off with everyone's money" when the game is finished.