Beyond pillows, seat cushions for chairs can be covered or re-covered using seatbelts. For instance, designer Nuttapong Charoenkitivarakorn, of Thailand furniture company Boonchucharoenkit, uses scrap seatbelt material for his lounge chair [source: Treehugger]. Designer Peter Danko's dining chairs, which uses end or line or discontinued seatbelt material, have been used for their durability in style in homes as well as high-traffic areas like restaurants and malls [source: Danko].
Looking for a DIY re-covering? Consider those aluminum chairs in your garage with the frayed webbing: Instead of throwing the chairs away, head to the local junkyard for some seatbelt material to replace the worn-out straps. Cut the old straps from your lawn chair, and wrap the seatbelt material in its place, using strong nylon thread and even screws to hold the material safely in place.
An alternative DIY project is a pillow made from seatbelt material. Similar to constructing a purse or bag, the material can be woven around a block the size of the pillow you want, then stuffed and sewn shut with heavy nylon thread.