Chris - one way you might be able to help is provide a mailing list of forum members (not CA members). One of the problems with this is timing - there are people who will disappear for the winter months and come back in Feb/March, by when decisions have been made and possibly orders placed.
The logistical exercise of sending out the goods is one which needs addressing too. If sales are going to grow then we need to look at whether the suppliers can ship too (even though this might be reflected in costs). It isn't right that Robbo spends half his waking life in banks, checking statements, packing and posting.
Robbo, I can help with the PayPal thing if you want. It is really very easy to make and receive payments, and once they are verified as paid by PayPal all you have to do is withdraw it to the place of your choosing. You geta  full listing of who has paid what, and there is a comments field (I think) so that people can detail their requirements (items, sizes etc). It would save the time you spend on spreadsheets too.
And my preferences (in order) are for:
- 2005 t shirt, same design, just change the year
 - Club Arnage flag. I think along the t shirt design would be ideal, as it would give a consistent identity
 - Car stickers (not windows stickers, the large clear transfer thingies people put on their bumpers etc)
 - Ticket holders