I got an alarm clock that also has a vibrator. It’s amazing – the first time it went off I thought there was an air raid siren, but it sure woke me up!
I don’t use it every day because I don’t want to get used to it – the vibrating alarm is great when you’re sleeping over and don’t want to wake anyone else, and the noise + vibrating is great when you’re going to be really tired in the AM and want to make SURE you get up.
Also, no alarm will work if you don’t get minimum sleep!! If you don’t go to sleep before 12 it will definitely be hard to get up in the morning, even if a herd of buffalo pours water on you as they stampede through your room dropped by a helicopter.