Selfridges voucher - what would you buy?

[minipie]

DH and I were given a Selfridges voucher as a present, I think it's for about £70 IIRC (it's one of those electronic cards). We need to use it before it expires (already renewed it once!)

What would you buy? It can be something for just me rather than me and DH...

Put it towards a nice necklace from Tiffany (they have a concession there)?

lunch? easily spend that in the champagne bar. and a nice treat.
clothing wise not much for that prie in there. are you close enough to go and browse? I'd probably end up wasting it on chocolates, wine and stationary.

Mmm tricky. Yes I could put it towards something more expensive (but would have to be something I'd have bought anyway iyswim). We're close-ish - in London but not central so would be a special trip.