I was having trouble sleeping and suddenly had an idea while thinking about the new consignment shops: art shows. In real life artists frequently show off their work at shows held at art galleries to gain a bigger reputation among the art community, meet other artists, and sell their work.
In the Sims game, both painters and sculptors could rent a space at the art gallery to set up an art show. There could be an initial price paid by the Sim to rent the space, then each visitor to the show pays for admission (part of that admission would go to the gallery, part would go to the artist, maybe?). While at the show, others Sims could mingle, view your work, you could make friends with other artists, and other Sims would even purchase your art.
What does everyone else think? Other ideas?