I'd get a Real Techniques Expert Face Brush and a good foundation (I love Diorskin Nude).
Alternatively, wait and get the new Chanel creme blush when it comes out in 2 weeks time - it's supposed to be very good.
A palette with eyeshadows might be really nice - I'd probably go for a Dior one as I've heard loads of good things about them. But naturally, it depends on what you like, use and need.
Smashbox Heat Wave palette is also nice, but there's a lot of fall-out and without primer, the colour pay-off isn't great.
A nail polish in a classic colour could also be nice - I like Dior, Chanel and Guerlain (not sure if Guerlain is sold in Boots).
Things that last quite a while before they'd go off would be: nail polish, powder products, perfumes and brushes.
Things that can/will go off quicker: lip products, products with in-built applicators that can't be washed, mascaras, liquid/creme products.