I am a one-man operation who creates 3D printed objects that wrap around your mod to make it easier to grip, stops it from rolling, and even makes it look cooler! From dragons to simple saddles and many more add-ons, there's more and more styles coming every day, so check the link below from time to time! Also, if you have an idea for a new gripper, just post it here as well!
https://www.shapeways.com/shops/modgrippers?sort=newest
https://www.shapeways.com/shops/modgrippers?sort=newest