On top of that I use a flash card program that also aids me in learning. But that is just your typical, daily drills...no magic mnemonic devices to be found with flash cards.
You know that when I was back in college I used the mnemonic methods all the time, everyday practically. And because of that I nearly aced all of my mid-term and finals. It may seem like a lot of work, and it is initially, but after a while these techniques become second nature like signing (I can only guess).