I realise this is a bit of a long shot, but I thought I'd cast a line and see if anybody could help...

I work full time, but want to earn a little on the side. Can anybody suggest a type of product I can sell online that makes around 20 (about $30) profit from each item sold? I'm looking for small but high margin products that I can carry in a shoulder bag to the post office on my way to work.

Any suggestions? All appreciated!