DS Lite Flash cart?

[Synthesthesia]

I've been looking into getting a cart for my DS so i can store all my games onto it, seems safer and more convenient to me than carrying around lots of little games i can lose.

So my question is, what's the best one? And how do i go about getting it to work?

Sorry if this is against the forum rules, but i don't want it for piracy, just convenience.

Thanks!