I've bought adult DSs new wallets and whilst I'll be adding some small amount of cash for luck (I've no idea why, I'm not superstitious etc but my DM has drummed all these things into me and can't not do them!) I want to give them money for Christmas. I can't see the point of me going and getting cash for them to most likely have to go pay it into their account when I can just transfer it anyway.
So do I just write an IOU/note and pop it in or has anyone got any other ideas?