When you move into a dorm room, go into buy mode and sell everything you can. It is possible to get up to 65,000 Simoleons from a small dorm room, with eight rooms and a medium dorm room with twelve rooms. Note: This trick works best if you sell everything as soon as your Sim moves into the dorm room, as you will get the full price for everything. If you do not, you will get a slightly depreciated value for all the items.