Before you begin, you'll need to know how long to make your belt! You can do this by measuring a belt you already own, or by wrapping a piece of string or yarn around your waist. Be sure to leave plenty of slack so that you'll be able to get your belt through the ring closure later.

Measure out a strip of duct tape the same length as your string.

Fold your duct tape strip onto itself in thirds horizontally ("hot dog style"). Start by folding down one side...

... and then fold over the other side. No stickiness should remain down the middle of the strip!

Take your two metal keyrings (or other similar rings), and string them onto one of the ends of your duct tape strip.

Fold the strip over onto itself, trapping the rings inside the bend. With another piece of duct tape, tape this fold shut, securing the rings.

With your scissors, go to the other end of the strip. This edge is probably "raw" and ragged, so trim it neatly. I've trimmed it in a half-circle here.

Your belt is now complete! To put it on, you wrap it around your waist, then thread the free end through the two rings...

Bend the free end back and through the back ring. Gently tug it tight, and you're ready to go!

If you want to make a thicker belt, it's just as easy! Instead of taking only one strip of duct tape and folding it over onto itself, use strips of duct tape to create duct tape fabric the length you want your belt.

Use your scissors to trim away any ragged edges.

Now, your belt may now be thicker than your keyrings! All you need to do is trim the ends of the belt so that they'll fit through the rings.

Just as before, slide the rings onto the end of the belt, fold the belt back onto itself to secure the rings, and use more duct tape to keep it in place.

Repeat your trim on the other end of your duct tape strip. Your belt should now be fat in the middle, and narrow on the ends to accomodate the rings.

A bigger belt means more room for decorating! Use stickers or even more duct tape to personalize your belt.