Brushing your teeth well is an important part of personal hygiene and also quite complex for those of us who are dexterity challenged. I have adapted my toothbrush with Sugru and two rubberbands to make it easier to hold and use without dropping it.

Electric toothbrush modified with sugru and elastic band

The two Sugru grips I added can be used in two different positions so that I can turn the toothbrush by varying how I hold it to be able to reach all the hard to reach places easily. A velcro strap could be used instead of the rubber band strap, I just find the elasticated band easier to slip on and off.