A case peanut would be just about the most tame and unassuming thing I could carry. Too bad it's over the blade limit, think I'm just gonna go with a victorinox on my keychain. It's not like I'm going to use whatever blade I pick very often anyways. At the community college I used to go to they let you carry whatever the heck you wanted as far as knives go. One time somebody pulled out a 4 inch hawkbill folder to scrape some residue out of something in the chemistry lab and nobody blinked.
That's awesome. I want that to be the culture of my school.