I try and take something different every week, last night I took a can of baked beans. I have given mugshots, pasta and sauce, alpen lights and the new kelloggs fibre bars for people who don't know about them yet!
We usually get a mixture of stuff, we've even had some lovely veggies from someones allotment! My group seems to be pretty generous we've had whole punnets of strawberries and plums donated.
One time I won slimmer of the week I did get a manky banana and an out of date tin of prunes! Bleugh!!!