I have a hard time getting the lids off my Tupperware! Dollar store containers are a good buy but nearly impossible to pop the lid on, so I came up with the idea of inserting a rubber band.
I save the rubber bands that come around broccoli and other vegetables for further use. Cut the rubber band and put it under the lid and snap the lid shut. When you want to open the container, pull the rubber band to the top and use both hands to pry the lid open. It does work a lot easier.
Great idea, since I was just diagnosed with rheumatoid arthritis in my hands and have great difficulty opening containers. This will help.