Here’s something that deserves a mention. In the best tradition of gadgets it’s novel, cheap, was probably based on alien technology and actually serves a useful purpose!
The marvel that is modern chemical engineering has managed to produce the Sticmatz ; a not-quite-rubber mat that will hold anything placed on it securely, at just about any angle, without leaving any residue when the item is removed. Great for holding the sunglasses / phone / gps on the car dash.
You can find it at a variety of UK resellers and garage forecourts (apparently, although I’ve not seen one yet) for about 6 pounds.