If you've got a baby, you can get double the value on baby products in store. Personally we did what muddleduck suggests and turned £7.50 worth of vouchers online into £30 of Belle Italia vouchers and had a night out and caught a movie afterwards!
If they are clubcard vouchers you can input the codes online and any change you have will be sent in the next voucher run (quarterly)
We also exchanged £7.50 worth for a years subscription to Mother & Baby magazine.
I normally save them for the christmas scheme but since they brought in the new double up thingy I opted out.
I actually have £10 of vouchers, I meant £20 after double up but I have been scouring all the rewards they don't seem to have any near me in the Highlands although we are going to Drayton Manor next year so I think I might keep them and exchange them for tickets to that which are only £7 each in vouchers rather than paying £60 for a family of 3.
Have never done that before though only ever spent them in-store so can I ask a few questions?
How long will the vouchers last?, Do I need to exchange for Drayton tickets before we go?