Voucher Question For Charities Or Other Players....

Are there any rules or problems if players wish to donate their vouchers (Amazon, Tesco, love to shop etc) to other players or charities????

I know you cannot give/swap stars with each other but was wondering if there would be a problem with once the voucher has been claimed another player using it??? I ask partly for selfish reasons...of course because I am saving up for 2 Amazon vouchers to buy a parafin waxer machine to help the arthritis in my hands and feet... now several players have offered me stars but obviously we can't do that but out of curiosity if they claimed the vouchers and then told me the codes could I use them???

AND this is not a completely selfish reason, before you all get up in arms and run screamin at me with pitchforks... but we have many overseas players and was wondering could they donate theirs to certain charities??? At least I think I am correct in saying overseas players cannot claim prizes etc....???? I would like to (another obvious one this...) like to make arrangements with a cat rescue to be able to use either Tesco or Amazon vouchers for cat food, toys, beds etc....many would like to see a childrens non-profit in the list no doubt and possibly Help the Aged etc so there would be several that players could choose from???

So let me know a) if this is allowed and b) can we organise this... I think one thing to be considered would be that maybe the vouchers would have to remain unclaimed until the person/non-profit can use them so they do not run outta date etc...thoughts anyone????