I've recently started building up an assortment of SFC and SNES hw/sw, since I'm beginning to miss my little SNES collection (mostly thanks to this thread) which is overseas right now.
Picked up a Super NES and SFC. The Super NES is "modified" (tabs yanked out) to play SFC games.
That controller in the foreground is for the Sharp SF-1 (a TV that has a slot for SFC games in the top), which isn't pictured. Unlike regular SFC controllers, the cables are as long as SNES controller cables. Also, there isn't a model number on the back of it like usual.
In the SFC you can see a Nintendo Power cartridge that you could buy and install full games onto from convenience stores across Japan – pre-download cards!
I cleaned up this Super Famicom Box as much as I could, soldered in a battery compartment, and removed the tabs from the key slot so that the mode can be toggled.
The SFC Box is unique in that it has separated composite output, TV in/out, two power outlets, save storage to the unit rather than cartridges, an optional coin slot, controllers with insanely long cables, and custom boot/game select screens.
You can see the game select screen in the background. This unit contains two cartridges, each almost as big as a regular Super NES. There are apparently two other cartridges in the wild, each containing two games.
Also recently picked up Earthbound, Mega Man X2, and Mega Man X3. The 3 combined cost about $250, and also included the US SNES and Mario World.
I'll post some more pictures of pickups before the end of the week!