In the laboratory, however, if you recipes quickly wrote down on the table and connect it wipes out again, they are OK. I used it used Edding. After the renovation, the new tables are but so bad that Edding was not really good and always get rid left radicals, so we were not allowed to record directly on the table at some point. Paper in combination with Bunsen burners and various liquids is but goofy. The pins can be easily re-write directly on the Bench, there remains nothing, but you can see it just not sooooooo good as before with the Edding.
Otherwise, you can still use the Deklinationsübungstafeln for Latin, which I still have lying around. Which, although from the 1990s, but also from the material as the boards these days, as they also work very well. But who does that nowadays still ?!
They are best suited for cheat sheets. Direct note on the table that are difficult for supervisors to see, and when things get tight, over it and wipe away the evidence. You just have time to be in the room to bring his notes on the table (and well, I'm as Aufisichtsperson usually already there when the students are left in the hall, as the course does not work anymore).
