What are pervertibles? 

In BDSM, a pervertable (or as others prefer to call it; a pervertible) is any regular, old, common household object that can be converted into anything of kinky use!

According to Wiktionary:

pervertible (plural pervertibles)

A person who is liable to corruption.

An everyday or household object that can be used in sexual activity.

Here are some ideas on what can be perverted for your kinky needs:

Belts 

The almighty all-purpose belt can be used as blindfold, a gag, a leash, a makeshift collar, spanking instrument, restraints. It is a must-have for traveling!

Clothes 

Clothes. From restraints to gags, there are also so much things to do with this one. My personal favourite is to cut it to strips and use that as my sub's restraints...then take their wet underwear and gag them with it.

Tooth brush and toothpaste  

Toothbrush and toothpaste. Toothbrush is fun to use for sensory play---especially, vibrating ones. For toothpaste? Well, applying them on sensitive parts like the nipples hurts like a bitch. Plus, brushing each other's teeth can also work as an aftercare or just a show of dominance; having the sub serve by brushing the Dom/me's teeth, or just using the sub's mouth and invading it with a foreign object by brushing it.

Scissors

A good pair of scissors should be in everyone's toybox, it's just so important. Any play involving restraints, ropes, gags and cuffs that can malfunction, use the scissors to get your partner out ASAP!

Candy  

Plastic candy cane for impact play, but beware it breaks very easily.

Twizzlers for impact play, it can be very stingy and leaves distinct marks.

Kitchen utensils  

A silicone spatula with a metal core that hurts a lot and leaves marks similar to that of a cane. Cheese graters for impact play! 

Power cords

Got a punch of old power, USB, or other electronic cords laying around? Gather up a few, fold them so ends touch ends, bundle them together so they're all ends together (I used electrical tape), and then cut the folded ends in half. Now you got a nice homemade flogger that hurts like hell. If you're an extra evil you use the ends with the connectors as the tips.

Other 

Clothespins we use as clamps or even penetrate the skin with it. An Ikea Omsorg shoehorn is a great impact toy. 

Massager

A massager for everyday use? Maybe not, this could be used more in the sensitive areas by lovers for a foreplay or warm up for your BDSM fantasies.