Lovely deluxe aroma therapy set containing 6 x 10ml oils, burner, two candles and two wooden thingies I can't remember what they are called.
This would be a lovely gift on its own for you or someone else, even for you Secret Santa.
If your budget is say £10 and you wanted to pad it out you could always add a box of Matchmakers / small Toblerone bar / Selection Box £1 from lots of places just now, small bottle of wine or beer from Home Bargains for £1 - £1.50, plus a notebook, book, diary or DVD from say Poundland or Home Bargains again.
For ladies you could always pop in a nice nail varnish (posh ones have been known to be found in Poundland as per an earlier thread), some emery boards / nail file and nail polish remover optional and again can be found in Home Bargains, Semi Chem and such like
Any change left could go on a gift bag if you can't / don't want to wrap it.
Hope this helps someone and I'd love to know especially if you use my idea for a Secret Santa.