Not any more, ByCyclogical have created the Gripster, a cheap affordable storage solution for the garage, office or home.
Simply place the Gripster on your handlebar or drops, and lean it against the wall without slippage. There is also a sneaky little magnet to hold fast against metallic surfaces.
At only £8.99 it is a steal.
Gripster is a great piece of kit, as I was using a piece of foam before which never stayed on the handlebar. I have bumped into the bike a few times since using it, and it hasn’t fallen off yet. Delivery was quick.