Intro: Penknife Grip
I have had my trusty pocket knife for years now, and as per usual i have lost the toothpick and tweezers. Also, the side panels have fallen off leaving sharp metal sides.
Check out my other entry at: https://www.instructables.com/id/Sugru-Contest-Self-Righting-Toothbrush-Stand/
Get some Sugru (2 packs) and mould it onto the handle and smooth it off with your finger.
Now it has dried, it works a treat! Even more comfortable than the original!