How to make money with clubs

 Buy a bunch of painting easels. Create a club of people that just want to paint, paint, paint.

Start the club gather at least once per day and just keep the people fed every now and then - when they finish a painting, immediately sell it to the Art Gallery so they can start a new one.

 Everyone will gain painting skills and get better and better and their paintings will be worth more and more...  you will make money faster and can expand the club and buy more easels.

 My sim started this in a small cheap apartment and within a few days, moved to a house, then to a larger house - and with the club perks, she was able to buy creative moods and such to help even more.

 Everyone wins!