Restraint systems in a extremely tight storage situation

I just got my first pair of cuffs (yay me!) but my toy box is already pretty full, and I didn't realize how much restraint gear took up space! I'm in an apartment situation and space is tight right now. I have just enough room for my bed, books, and a bean-bag chair and it's going to be cumbersome enough when I have to move in a few months. What toys do you feel are best for someone with not a lot of room?