Put a couple of the iron-on patches from the shop on my nerd bag. This is the bag I usually take with me to MakerFaire and other geek-tastic events. They look really nice against the black fabric background.
I need to get more hackerspace pins.
Quick tips for iron-on patches:
Make sure the fabric you’re applying the patch to is clean.
Use a high enough heat setting to melt the adhesive and let it permeate into the fabric below. I used a high “cotton” setting.
Apply firm, even pressure over the whole area of the patch for long enough to let the adhesive set (as above) — I ironed each patch for about 3 minutes each.
Use a handkerchief or thin cloth between the iron and the patch, or you risk damaging the threads on the patch.