@WillyDeWulfe, if you want a widget idea, how about Complete BS? From here? It would actually probably be incredibly useful, and assuming there's a simple way to make text wrap, it'd probably be relatively easy to code.
Also, the difference between shuffle and scratch-n-sniff would be that presumably scratch-and-sniff would have some sort of function such that, if you scratch it, you can sniff it?
Okay, sniffing doesn't work on computers. But maybe some other sort of hint? You could make it so that when you mouse over the card, you can see a small number of the pixels on the card as a hint of what color it is, etc? (i.e. make it so that on "card mouse enter" or whatever it is, you replace whatever image you have blocking the card replaced with one with a bunch of transparent pixels thrown in.) Then you have a sort of rough idea of what the item is, similar to what you'd get from smelling it, and the modus would be easier to use if you store several differently-colored (different-smelling) items.
If people are looking for modus ideas, I've come up with about fifty under the assumption that if I came up with two every day, after a while I'd be able to go back through the list and come up with a couple fairly neat and fairly codeable ones. Would people be interested in seeing the list of names/descriptions?