Good idea. there is also this way charities can cash in on stamps – I didn’t realise it was done by weight though: “Stamps are sold by weight, meaning that many charities can turn old ones into funds to help their ongoing work. Simply cut the stamp off the envelope, making sure to leave approximately 1cm of envelope bordering the stamp, and post to the correct address.”

Why we all need to start saving used postage stamps from Christmas cards right now

Link: https://www.countryliving.com/uk

Here’s how to turn them back into money