You...are...rad.
That is an extremely nice game case, I might have to figure out something similar for Little P's vSmile cartridges. They're a bit bulkier, though, so I'd need pockets with a bit more give.
Hmmmm...I'm going to have to think about this. I used to be a much bigger DIYer before the little one(s) came along. (Pluralization still pending.)
The only creative use of limited resources I can think of lately is that this past summer we visited my brother-in-law for a few days, and discovered when we arrived that while he does have a bathtub, he didn't have anything to plug the drain with. (He only takes showers.) Since Little P requires nightly baths in order to settle down for sleep, and we discovered the lack of bathtub ability about an hour before his bedtime, I crocheted an 8"x2" strip with some cheap wool-blend yarn, rolled it up, tied it tightly with a cut bit of yarn, and stuffed it in the drain (using the tie-down as a drain pull when the bath was over). Wool is naturally fairly water-resistant and it made a pretty nice seal. Worked like a charm, and took about twenty minutes from start to finish.
I also knitted a tiny drawstring bag (I mean tiny -- size 2 needles and sock yarn, three stitches wide and four high) to cover the broken-off shard that remained when I broke the nosepiece off my glasses. I didn't have a spare pair and needed to be able to wear them comfortably long enough to get to the optics place to have it fixed.
But none of those things are as cool as your game case. Seriously, that is awesome.
All I am saying here is that I am to yarn as MacGuyver :: Duct Tape.