PVC suit and bags are also a huge turn on. it can be inflated or vacumed. Creating a nice prison to keep you trapped in.
I like total encapsulation, so hazmat suits and drysuits are a big turn on. I also like to take an item and change its use. So Owning a real firefighter trellborg suit is pretty cool.
Hazmat - Drysuit
Can you imagine that that suit was originally designed to escape soviets submarines? You can trust me, being tied up in it is pretty fun.