You can make a lot of little things out of duct tape like keychains and wallets. That’s just the beginning though, if amateur hour is over for you when it comes to using this medium, check out Duct Tape Engineer, the project book that will take your building to the next level.

This book contains 14 projects and some are practical, like the backpack while others are a bit left field, such as the kayak. That’s right, a boat, made from duct tape. Test that one out if you’re brave. Actually, test all of these out if you’re brave because it doesn’t stop there. There is a queen size bed and porch swing as well.

Obviously, some of these are for laughs since you would need a great deal of tape to complete these projects but even so, it’s really neat to see what some duct tape and free time can net you. And if you have a few hours to kill, why not make yourself a new greenhouse? You can pick up a copy for $11.05.