Black 1" wide nylon straps with metal friction lock. They are about 12 feet long and can be linked to make longer straps. I've used them to hold my canoe, kayak, and bicycle, but they could be used to strap down basically anything you want - lawn mower, rowdy children (just kidding), hold the refrigerator on the dolly while you're moving it. Of course, they can be shortened so that you could use them in other ways. Just tell me how many you need. If they need to be shipped, I'd recommend USPS flat rate boxes. 25% discount for orders of 11 or more.
I can provide pictures, if desired.