L.M.
I would use either an old button down shirt of yours or hubby's OR get one from a thrift or Goodwill store. I would look at a thrift store for a beret as well. Make a palette out of thick posterboard or carboard and use marker or paint to put "paint" dabs on the pallette. A craft store should have a paint brush (or you can borrow one from the school's art department)...keep in mind you may want one of the longer ones so it looks like it is really an artist's brush.