If someone has any familiarity with the system at all, I think the TG-16 picture is one of the easier ones, considering you can even see a card in the slot.
I somewhat guessed on a couple (like the Master System one; I only have an original Master System and I've used it so little that I don't even remember what its power switch looks like, haha), but the original Xbox was the only one I gave up on. Shows how little I care about that system, haha. Still haven't bothered to buy one even after all these years. It's funny because I actually like the 360 pretty well, and it's the PS3 that I still don't own, which is opposite of what I had the previous generation. The original Xbox has almost nothing on it that remotely interests me, but the 360 has gotten a decent amount of Japanese-developed games.