Another thing I use is what Fred has posted before about what he uses at times; I copied him. I did use it as my only tag before I got paper clips and it was time consuming writing each tag out as I went along but now I will use it if I am using a pollen for just a few things.
You can cut the mini blinds any size you want, I think Fred cuts his 2.5" but I cut mine a little smaller. You write on them with a No. 2 pencil and it doesn't fade or wash off. You can reuse them by crossing out the last pollen parent and writing the new one. Now if you are one that writes the pollen parent, date, time, temp, and lots of other info on the tag
then you may just have to flip it over to reuse but Fred and I just write the pollen parent on it.
Here is a photo that Fred posted before showing what he used
I started using the clear coated paper clips on mine because the metal ones I used were rusting.
