I have done character sprites, but they're not easy and I've not been that motivated as of late.

This is an example of how a character sprite would look fully assembled (I don't have the program to properly assemble them, but this one I did make from scratch to the individual pieces)
And this is how characters would be put into a scene

As for "stuff", you might need to clarify. I have made everyday props and vehicles as well, but vehicles are about as challenging as the characters themselves.