I’m able to contort and squeeze my current tube of toothpaste so that I’m now a week beyond when I first contemplated tossing it (to spare the stress of trying to get a greater-than-satisfactory dollop). My hands have come back from extreme weakness and rigidity (after the March brain surgery, and also not being sure if spinal tumors were acting up). Manual teeth-brushing is probably a good rehab exercise in itself. Definitely! (At least when using the Przybysz Method, and approved implements/techniques.)
I think this move ranks up there with the (insert appropriate Seinfeldian adjective…) soap bar meld: when one bar gets too thin to use alone, but instead of tossing it, an attempt is made to meld it to the new bar.