Thread: VCI (volatile corrosion inhibitor) paper or disks

I once got some "gunsmith paper" from Sinclairs and use it to wrap up dies and parts for storage.
It got a bit long in the tooth a few years ago and now I can't see anything similar around.

Does the paper have another name I should look for ?
I like the idea of wrapping stuff up as it protects it a bit and keeps it clean.
There are a couple of disk or block-like products that will let out a vapour in an enclosed space like an ammo box or gun bag - any use or not ?
Are there some items they shouldn't be used with like aluminium or optics ?

Many thanks for any comments or advice around the general topic.