My most popular product of late has been the lottery ticket or scratch-card holders..
Because these are personalised they are great as they double up as a favour and place-card - that saves money on the cost of the wedding or party stationery - and of course they appeal to both sexes and to people of all ages.
These can be resized to fit a standard £1 scratch-card that measures 2.5" x 4" or to a Lucky Dip lottery ticket, both of which can be bought in advance.
Nearly all my Save the Date designs can be adapted to this use.
Here are some of the designs I have ready so far.
Rhapsody Cream (also comes in blue)