Ideas for simple canapes for 20ish people that I can make a day in advance...

[ouchthishurts]

..any ideas please? I was set on smoked salmon blinis but then realised I really should heat/warm the blinis before serving which is no good as I really want to be able to make them up the day before and keep them in the fridge overnight. Any thoughts? As I say, I want something simple but also poshish/nice/like I have made an effort (it is my DD's christening lunch) Thanks!

smoked salmon cream cheese pinwheels. You spread cream cheese over a piece of smoked salmon, roll it up like a swiss roll then cut into 1cm rounds (you need a very sharp knife for this).
Dead easy, looks impressive and can go in fridge.

little toasts, melba or similar served with a garlic cream cheese and a home made salsa,

thank you both - like your idea katy as had identified half price salmon at Sainsburys!