Maybe tool rolls. I have a couple of leather tool rolls that I really like. One is a split, though from very good vegetable tan. it's hard to find a use for suede that isn't utilitarian, but it can be good for that depending on the suede, I mean some of it is near worthless.

add some frilly fringes to your favorite tuxedo sleves?

All I can really think of are utilitarian applications. I made a seal for the bottom of my winter motorcycle helmet, it seals around the rim of the helmet and leaves a skin-tight hole for my neck. It was supple enough not to chafe my neck, beathable enough not to collect moisture from my breath, and thick enough to keep the wind off my skin. It gets down around zero in the winter where I ride, and then you add 65mph wind-chill-factor on your body, as you can imagine you will become PAINFULLY aware of every square centimeter of exposed skin!

Oh and there's always moccassins of various types, or ugg-type footwear. I've never been a mocasin person myself.

I'm making lamellar out of cuirboli tooling leather, so, while that's a good idea, I'm already doing that.