E-wallet/prepaid wallet?

Hi. I am looking for the following:

A digital wallet, i.e. an e-wallet or prepaid wallet (I think that's what they're called).

These should:

be free / very cheap

be usable for u18

be rechargeable with e.g. bank/card

Have the function to pay contactless

ideally, but not necessarily, include a (prepaid) credit/debit card/bank account (IBAN etc.)

If you have similar options, such as Skrill (but it's for over 18s), please let me know!

Thanks!