Lindenfest is a festival in Geisenheim, Germany centered on a large, old linden tree. They decorate the tree with lights, do folk dances around it, and celebrate for 3 days. It's also a holiday my kindred will be celebrating this year.

In ancient heathen times, trees of particular note were often associated with gods and were part of their worship, for example: Thor's Oak. Linden trees are associated with the goddess Frigga, and in particular with her handmaiden Lofn, also known as Minne. My kindred is celebrating Lindenfest as a holiday for Frigga and Lofn / Minne. We will be drinking linden tea. As Geisenheim is in the Rhineland, noted for its wine, and a holiday in summer has the character of a harvest festival, many of the festival-goers in Germany drink wine. We might drink some wine too, but tea first.

We're not trying to replicate what they actually do in Germany, since we can't dance around the actual linden tree there. We can bring the spirit of linden to our celebration with linden tea, though. Perhaps we will even manage to do a folk dance, although there is very little overlap between my kindred and the old dance group that was destroyed by the lockdowns, just me and one other person. We don't have a linden tree to dance around, but maybe we could dance around the teapot while the tea is brewing? As the Minne aspect of Lofn is also associated with mermaids, after our tea party we'll also be going for a swim, continuing the mermaid theme for the summer.

We're starting with the idea of Lindenfest and making our own celebration out of it. It's going to end up being quite different from the original version, and that's OK. Most of the holidays we celebrate in the USA are very different from their original versions, and most modern pagan and heathen holidays are celebrated differently from the originals, even the ones for which a lot of careful reconstruction was done. Change is OK. That's how culture operates. Lindenfest in Germany is 3 days, the second weekend in July, but ours will only be 1 day, on July 11th 2021. 

Info on Lindenfest as it is currently celebrated in Germany:
https://encyclopedia2.thefreedictionary.com/Lindenfest

Info on Lindenfest as a pagan holiday:
https://journeyingtothegoddess.wordpress.com/2012/07/14/goddess-minne/