How about a day of sledging on the Pilatus? Fräkmüntegg is some 45 minutes from Lucerne in winter; a panoramic gondola cableway takes you from Kriens all the way up to Fräkmüntegg.
You can rent the sledges directly at the Kriens valley station. Fun with the "family flizzer" toboggan or the "Bergfink" sports toboggan is guaranteed.
The two sledge runs on the Fräkmüntegg are diverse - from technically easy to challenging, there is something for everyone. With a distance of 3 kilometres, the red piste is considered medium to difficult. The slightly longer, blue piste is 4.8 kilometres long and easy to ride on. Both pistes run from Fräkmüntegg to Krienseregg.