I own this clock called "Clocky" look it up! Its actually really cool, because when the alarm beeps, it rolls off your bed side table and runs around under your bed and around your room. it forces you to go get up and find it! its really fun too, and you can deactivate the rollers in case you want it to be like a normal clock. i got mine for about $50. theres also a really cool clock you can get for a few hundred dollars that cooks 2 strips of bacon about 10 min before the timer goes off, so when you wake up 2 warm strips of bacon pop out!
I have an alarm clock that starts out with a soft sound and gets louder and louder and won't shut off until I press the button. To make myself get up, the clock is in the next room; I have to get out of bed and walk around to shut it off.