If you can make Goodra plushies, I'd imagine there's a huge market for those, mostly because
people kept asking me to buy mine.
Other than that you can make Eeveelutions over and over, since they have the same overall body pattern. Personally I'd find that boring, but since you're looking to make profit (whereas I'm just doing it for fun) it's definitely an idea. Also as
>>19069834 mentioned, if you want to make significant profits, having an embroidery machine can turn an average-looking plush into something that looks completely professional for which people will shell out 2-3x the cash.
>>19070063sup hoppip