The term 'attractive device' can be summarized by two crossword solutions: TRAP (4 letters) and MAGNET (6 letters). A TRAP is a device used to capture animals or other objects, usually by using bait or a mechanism that closes a door or gate. A MAGNET is an object that produces a magnetic field, which can attract or repel certain materials such as iron or steel. Both of these devices are used to attract objects or creatures, making them attractive devices.