Or so my children tell me—they always insist they need more games for their DSs.
If you believe them (or your kids!), you might want to check out the current buy 1, get 1 half off sale on Nintendo DS games going on now at Toys ‘R’ Us. (Thanks, Heather!)
Or you might want to deliver a lecture about starving children in Africa who don’t have Nintendo DSs. Personally, I’m opting for the latter. But whatever works for you is good.