LEGO is awesome, but making a USB cable desk tidy with LEGO is even more awesome !!!!!
WHAT YOU NEED:
Why sugru is good for this:
1: bonds to ABS brilliantly :)
2: bonds to most other materials
3: you can remove sugru from most non porous surfaces without leaving any marks
Unlike LEGO, sugru isn't a toy. While it's still soft and squidgy, sugru is for grownups, not kids, so keep it away from those little guys. Once sugru has had time to cure, it's safe for everyone.