If you need ideas for pincushions - I'd suggest the magnetic wrist one :) It looks cool - and others that are not ordinary ones...
I have over 120 pincushion pattern links on my site - along with tons of other ideas... if you want, go and have a looksee and maybe a few things will pop up...
I'd also suggest maybe bookmarks? They are quick & easy and you can probably sell them for cheap.
I think most crafters don't buy things handmade unless it's something cute or clever and something that they would not have time to make for themselves.
Here's a link to my site. Under hundreds of sewing links, you will find a slew of things to get the ideas flowing.
http://yarn-or-fabric.weebly.com/