There are several small and huge wollfestivals throughout the year in Germany, here are those where you can find Buntwurm:

April, 04th – 05th 2020 Leipziger Wolle-Fest, 04356  Leipzig
April, 18th – 19th 2020   Hohenloher Wollfest, 74572 Blaufelden
May, 02nd – 03rd 2020 Gewollt Berlin, 13507 Berlin / Tegel
May 23rd – 24th 2020 Kielgeholt, 47119 Duisburg

Stand Wollfest

More dates may follow