Sorry for Being Gone So Long!
Firstly, a goodly amount of assets have been added to the asset store, and you might be able to find more on my OpenGameArt.org page, here! I typically upload there first, so you will be able to get it there before you see it here.
Secondly, I added a donation button the website. You can always click it and help me out if you'd like, and I'd really appreciate it. :) I like being able to help you out, so if you'd like to help me a little bit, you have that option. I've been requested to take donations for a while, so I figured that I might as well.
Thirdly, my game Byte Sized Hero will have continual updates and is going to be open source to the very end. The only thing that's not open source of it is the artwork that will be used (because it's likely that I will hire an artist to make sure it's 100% quality). I'm a good artist, but not a great one. I want something that can really compare to AAA titles whenever the game is released. Read about it here!