There are some good patterns for Finnish tablet weaving out on the internet. Google shelaghlewins.com for her article 'Tablet Weaving for Dark Age Re-enactors'. Sorry, I can't do links. Also look up 'Applesies and Fox Noses Finnish Tabletwoven Bands' by Maikki Karisto and Mervi Paoanen. And 'Tablet Weaving: Bear Tooth Braid from Kaarina burial site' which is on pinterest. There are lots of others.
I passed some of this on to a local weaver, one of the guys who runs our Mediaeval Fair, and he has been making them on a little simple loom he built, and they are beautiful.