Several personal conversations as well as discussions on Facebook gave me the idea to create an offline version of the taiko group database.
I remembered the PocketMod Organizer as a perfect method to create a simple and cheap portable list. All you need is a printer, an A4 sheet of paper, and a pair of scissors. With this, you can easily create several booklets which can then be handed out during classes or workshops.
As of now, there is only a booklet for the taiko groups in Germany. You can find the download and the folding instructions on this site. Feedback is most welcome!