Does teaching ?
if you are good enough at self promotioon, it would. Also, if you follow this program, a number of your needs are met:
mortgage = live in the art gallery as part of the installment
cat food = roasted squirrel
the vet = why bother? When the squirrels contract a rare and deadly squirrel virus, say that in allowing them to suffer through their illnesses, you are merely demonstrating the violent and fatal nature of all live. Say that in showing the squirrels gradually dying, you are reflecting how the human body withers away and dies.
dinner = food you steal from the art gallery cafe. That, or stewed cat ( with leg of squirrel) .