Stoos: 30 km pistes
Location: above Schwyz
Insider tip: Klingenstock
Price for familes: SFr. 119.-- (Warning: they might ask you if you have proof that the kids are yours. They told me I needed to bring a copy of my Familiebuch but would make an exception for that day. The idea of bringing a copy of family identification really ticked me off for a bit.)
Located above Schwyz, Stoos has two skiing areas: Fronalpstock and Klingenstock.
Fronalpstock has the sunnier and easier pistes. There's also a beautiful restaurant at the top with incredible views. Fronalpstock has family slopes, not too hard but still interesting.
Klingenstock has just been revamped. The pistes have been lengthened and they've built a 6-er lift with heated seats. Klingenstock is an inside tip for skiers who enjoy steep uncrowded slopes. The views on top are again stunning but because the runs are steeper and the area is less sunny, fewer skiers tend to make to this part of Stoos.
Getting to Stoos: drive to Schlattli (towards Muotathal) and take the funicular car or drive to Morschach and take the lift. Most locals take the funicular because the lines are shorter.
I'd recommend looking at a map of the Stoos pistes before going so you can get an idea where everything is. To get to Klingenstock, you need to use two rope lifts, a T-bar and then the lift. But it's worth it!
Stoos:
http://www.stoos.ch/winterenglish.html