Wash out a 2-liter plastic bottle and allow it to dry. Use scissors or a drill to create a medium-sized hole in the lid of your plastic bottle.
Tear a paper towel in half and then push it through the hole in your lid. Push through only a small amount of the paper towel, leaving most of the paper towel sticking up out of the lid.
Place the bottle lid onto a larger lid, such as a large jar lid that is deeper than the lid. Use a hot glue gun to create four small bridges that connect the big lid to the small lid.
Allow time for the hot glue to dry and remove the paper towel. Add 1/4 cup of sugar and 1 cup of cool water to the 2-liter bottle. Mix the sugar and water around in the bottle.
Take the glued lids and screw on the 2-liter bottle cap to the bottle. Take your feeder outside and turn the bottle over. Place the bottle in your garden or in an area that hummingbirds can get to.