Yep, a label maker. Lots of current threads to read that might help you out with that.
If someone has several sets of these different peptides around, how do they manage to keep everything straight and know exactly what's what? I store mine inside the fridge right in the boxes that arrived with them, since those already have the names on. But because of my job I don't always get a chance to do the shots first thing, and it takes time when there are a bunch, so sometimes I bring a few along to the office and put them in the refrigerator there to handle later on. That leaves me needing some kind of marking system so I don't mix them up during the day. I'm curious if anyone else has found a good way to handle labeling in cases like mine.