Fold the top of the bag down tightly several times
Press out as much air as possible before folding
Tuck the folded top under the bag
Roll the top of the bag down from one side to the other
Twist the open end and fold it back over the bag
Use a rubber band to secure the folded top
Use a hair tie to hold the bag closed
Wrap a piece of tape around the folded top
Use a binder clip if available
Place the bag inside a resealable container or zip bag