What you need: Electronic Pocket Dictionary; Sharp PW-E550 Electronic Dictionary, $70
Risk level: Low
Similar to graphing calculators, electronic dictionaries are one of the few devices you’re allowed to bring with you to an exam. Use that to your advantage. Most models have a small amount of memory, but allow you to keep a limited number of notes on the device. Figure out which notes are most important to you, type them into the device, and go to your exam. The only hang-up: Some schools only allow certain types of electronic dictionaries, some of which may not have a notes feature.