A frugal life is an easy life!

A frugal trick for interior or exterior car mirrors.

Don't buy the special sticking glue or patches to fix mirrors on, they are more than £4 normally and are a waste of space.

Instead buy some "number plate pads" (all car accessory shops have them) they come in 1mm and 6mm thickness, you want the 1mm ones.
they cost around £1.50
Clean the area where the mirror was stuck to, a rag with turps on it is ideal, or washing up liquid on a cloth, make sure its dry, then cut your number plate pad to size, place it on the base of your mirror, push firmly when its in place on your windscreen, for about 30 seconds.
It'll take the windscreen to smash before the thing comes off again!

You can use these pads for all sorts of things indoors or outdoors.
Remember: they are designed to hold number plates on cars driving at 80 mph, I don't think a coat hook or mirror is going to trouble it.
Plus they are cheaper to buy than the designated product.

The reason the glues designed "specially for" sticking them on, are not good, is when condensation hits your screen.
Your mirror is on cold glass, as soon as the warm air hits it, goodbye glue!