I just used a food storage can lid (if you haven't invested in Pampered Chef's easy-edge can opener, you really should). You can use whatever you like.
I went through my scrap paper and traced the lid onto the paper.
I distressed the paper's edges with ink and adhered to the lid. I used tacky glue, but whatever you prefer is fine.
I then went through my alphabet stash and picked the one I thought would work best.
To stick it to the dishwasher, I did the simplist thing.
I got a magnet and stuck it on. The can lid is magnetic so there's really no need to glue it on.
Instead, I can just flip the sign. That's the part I like. I didn't like the kind that said "clean" on top and "dirty" on bottom and you would rotate it. This was much more my style.
And now a random picture from our vacation: