Isar rafting - a nifty idea - . An ideal introduction to the world of rafting - along the Isar from Lenggries to Bad Tölz.
How about a spot of snow rafting? Rafting over the mountain slopes in a snow raft or a traditional log-cabin evening on a mountain pasture.
www.action-funtours.de  

Huge fun for anyone. Summer tobogganing on the Blomberg - down into the valley on the longest summer toboggan-run in the world. In winter, Alpine skiing on excellently maintained slopes, under the floodlights in the evenings. The brand new halfpipe is just the ticket for all snowboarding fans.
  www.blombergbahn.de

Now that's worth seeing! The biggest waterslide park in Germany is in Bad Tölz. Alpabob and wave pool at the ALPAMARE pool and leisure complex.
www.alpamare.de  

Haven't you always wanted to do that? Up, up and away in a hot air balloon and get a bird's eye view of the alps. A fantastic gift for a loved one! You can take hot air balloon rides from Greiling near Reicherbeuern.
  www.ballooning-reichart.de