I have 2 x £10 Argos vouchers that I received with my recent iPad purchase from Argos.
These are online vouchers that I received by email so can only be used online and they expire on Wednesday 24th December.
I've also read somewhere that you can only use 1 voucher per transaction, but I'm not 100% sure on this.
It is unlikely that I'll be use them myself, so if anybody wants them I'll do both for £15 or 1 for £8. Payment by PayPal gift or bank transfer and I can send you the codes by pm/email.