Well, this is such a thing. It's called Sugru, and I've been pushing it like a crack dealer for years.
Invented by spectacularly-named Irish Royal College product design graduate Jane Ní Dhulchaointigh (it took her ten years), Sugru is a self-setting wonder-material that fixes, modifies, changes, and adheres to, anything. It's not Plasticine. It's not Modroc. It's not flippin' Fimo either. You don't need an oven, it dries and sets in the air, is moulded by hand and stays flexible. It can withstand temperatures from -50 to 180 centigrade. It's waterproof. And it sticks to anything.
For the juicy tech spec, you can go here. https://sugru.com/about
It's actually a kind of silicone rubber, and I've given packets of it (which look just like condom packets) to everyone from the builder to the plumber, the bikeys, the architect, electrician, garage fellas and family and friends. Whether they've played with it yet I don't know - but suffer the fool who doesn't!
Sugru changed my life in that it provided a thing with which to solve the sorts of problems I previously just didn't know how to fix. I'm handy with a screwdriver, I'm good with a drill, but some things just seem impossible. And we hate throwing things away. Thus, our house is a living monument to the stuff. Well, not quite, but here are some of the problems we've solved and hacks we've made with this wonderful material.
For more, go to Sugru's website. You need it in your life. You actually do. Come to my Church of Sugru!
Stockists are here, but of course, you can buy from them direct.
Modified my chuck key handle, to make it easier to turn when A Bloke has been using my drill:
Made a doorstop, to stop the back door banging in the wind (it's moulded round a screw in the ground):
A removable cover for the lock on the door, to stop the wind whistling through it:
A new handle for the little bathroom cupboard:
Mended the soap tray thing in the bathroom (there are four repairs like this one):
Stuck Lego heads onto earring backs:
Modified window seals on our Nissan Pao:
Made a bonnet catch too:
A stop for the lid in the kitchen step, so it doesn't scrape the wall:
Feet for the crate which holds all my current job bags, so the floor isn't scratched:
Little pads for all the chairs, so they too don't scratch the floor:
His Favourite Mug, handled shattered into seven pieces, mended so you wouldn't even notice:
The design matches that on the bathroom fireplace:
Stoppers for the reclaimed chemical bottles in the bathroom. They're aren't full of hazchems, just inked water. They're stamped with my 'ink bottle and quill' wax seal:
Modified the gate catch:
Made a new taper on an improvised stand for the bird table, when the builder chucked the original support away:
Made the van's air compressor handle less miserable to use (in matching colours):
And my first ever repair, a favoured glass lotion dispenser dropped on the floor and the crappy plastic nozzle smashed off. All Sugru'd up and still going strong:
An extra couple of pads on the coffee grinder so it doesn't damage the worktop when in use: