Do some comics and sell them?

Do some comics and sell them?

Comics do them and sell some?

Seriously though.
Maybe do a paysite. Either as a contributor or a creator.
Or have a website and sell ad space, too! Thaaaats a good one.
Just, either use a good service (google pays WAAAY less than the norm) or sell the space yourself and/or with a marketing manager.

Comics, art packs, books. Paysites cost a lot to start up, and getting into one can be a little hard. Yeah adspace too. Just network a ton I guess.