So there are these little things that came with the kids car seats. They never seemed to have a purpose for us...surely some need them but I had no use for them. We kept them and the other day I knocked a box of stuff down in the garage and rediscovered them. Its the black thing in this pic. I have four from four seats so thats just right. I cut two out and you see one there...and one at the bottom in use

Not sure I will use them but its kinda nice to find justification in not throwing anything away