I've been spending the last few weeks prepping like crazy for the SF Zine Fest on Labor Day weekend. I've made a ton of stuff and I thought I was ready to start ordering envelopes for everything. Then I realized that I had made a lot of my stuff in photo sizes, like 4x6", which is not a standard stationary size.
Untrimmed 4x6" cards
Luckily, I had room to spare on most of the cards so every day I've been bringing a box of items to work (the San Francisco Center for the Book) to do trim off the edges.
I was really disappointed when I first learned of my silly mistake but now I will be sure to make my items fit an envelope instead of just assuming it's fine.