I just bought a Gameboy Advance myself. I bought the clear indigo one (with a Super Mario Advance game included) for a buck from a friendly elderly lady who was having a garage sale (scored some nice non-gaming stuff as well). I could just as easily play GBA games on either of my DSs, but there is just something about playing on a system that has no backlight and a limited battery life; it really takes me back to the olden days...of 2002-2003.
-------------------------
In loving memory of my Stump Smash (Giants version) figures—recieved sometime in June of 2017, foolisly sold on June 16, 2017 after assuming that I had another Stump Smash (Giants version) at home. Spoiler alert: I did have another Stump Smash...but he was the Spyro's Adventure version!
Let this be a lesson to all: always check the color on the bottom of the figure, because a non-duplicate can slip away from even a guy with autism who meticulously sorted through every single figure he owned for duplicates.