I have decided that these would be good presents for a couple of friends.
They need to be around £20 (so obviously they're not going to be top quality) but it would be great if anyone had a recommendation.
I have found these on ebay and will get them if no one has any other suggestions.
Quite a lot of them seem to have a zip. I would rather a normal envelope fastening.
(I know they may be considered a bit of a ridiculous present but we're getting on a bit and have known each other a really long time so have given most things over the years!)