...I don't like the looks of cardboard holders that are stapled, so I use small white labels to hold them closed...BUT we like to be able to handle the chips...sooo....when putting a chip in the holder, I put the fold on the left and "tape" the top and bottom, and leave the right side open so we can easily slip the chips in and out. Of course, sometimes we have more than one chip out and have to get out the TCR to figure out which chip goes back into which holder!

(I think I also forgot to mention that we have a labelling machine, and each holder has the TCR number on it.....and the TCR book has highlighter marking our chips)