Telescope
The Horrorwitz 'Star-Track' Outdoor Telescope is a good way of increasing your Sim's Logic. However, if your Sim spends a long time looking through it (two or three points wihout taking a break), he or she will be abducted by aliens! A blue sphere will appear and your Sim will vanish for a few hours. When they return, their personalities will have turned upside down and they will think about aliens for quite a while afterwards.