Store design ideas?

So some of you know I have a cafepress store. Right now it is a bit boring. Mostly work related designs. I want to expand that obviously. It is the Blue Collar Boutique after all so I want it to have designs for life, it does but not many. I want a lot of designs aimed more towards this aspect of my life. Shooting, survival, planning, and the evil zombie apocalypse for good measure hehehe. So any ideas? Something you guys would love to see on a shirt or mug or something but have never been able to find? I have a file of sayings and such to put up but none really centered on this type of thing. As long as it is not a trademarked phrase or copywrited body of work and the like I can design it.

I am open to ideas!!