If you want to produce more club based goods then there are a ways of doing this without it the club having to buy stock upfront.
You could setup a photobox pro account (link -
http://www.photoboxgallery.com/ ) and upload your logos and designs there. People can then buy items direct from photobox and the club can receive a commission on each sale. You can also add photos from group meets as well.
If I were you I’d still buy in stock for things that are cheap such as the car stickers and sew on patches but this way you will be able to have iphone covers, mugs, mouse mats, fridge magnets etc.
I thought it was something you might want to consider as another way to raise some funds for the club.
