Black Tack, £3-£10 depending on size of roll
Time used: Six months
What's good: Black Tack is like an industrial-strength Blu-Tack. It's amazing stuff and I discovered it after seeing our photographers use it to stick video cameras on to our test bikes. Just roll up a lump of the putty-like substance up in your hands, work it until it's warm and it will stick anything to anything, like it’s been welded together.
As well as safely sticking cameras to 180mph motorcycles around race tracks, I use to it stick my lap timer and sensor to my race bike, my TomTom sat nav to any bike I’m testing (so I don’t have to bother with a clunky fitting bracket) and various other random items to save using glue, screws, Velcro or duct tape. Best of all it's removable, doesn’t leave a trace or damage and you can use it again.
What's not: I wish I’d discovered it sooner.
Contact: Camera and hardware shops.