Stuff that comes in a tube

My hair gel comes in a tube.  When I think  it's completely empty, I KNOW there is still product inside that I can't get to.  So I cut the tube in sections.  Any section with product I put in a zip lock bag. I often get another 1/2 doz applications.  It definitely justifies the 2 cents for the bag.  I also do this with liquid bath soap, shampoo, anything in a container that can be cut with a scissors. Savings for me, less waste in a landfill.