Texturing my block-based game?

I’m making this upcoming plugin and I want to design textures for each item but I don’t know where you can do that at.

For reference I just wanna do something like 16px textures

Stuff like this:

Are there any non-copyrighted resources similar to this or websites I can design my own on?


pixilart could also make pixels and stuff like that, you might wanna use that

also cool plugin