The Rütli is the place where the old Swiss Confederation was founded. The walk takes 60 min one way. You can add the boat trip from Rütli to Treib and take the cable car back to Seelisberg (or other way round)
The path of Switzerland
This path was built to the 700 year anniversary of Switzerland. You will find a good overview here.
Gondola ride, hiking, biking, etc.
Gondola ride from Emmetten
Gondola ride from Seelisberg
A nice place to spend a day in the mountains
Visit this nice little lake, option of two cableways
You can start in Beckenried with a gondola ride to the Klewenalp, walk to Maria-Rickenbach, go down with the gondola, take the train to Stans and take the bus back to Beckenried where you started
The Stanserhorn is a great place for hiking or just take in the spectacular view. It has an oldtimer funicular, the world's first CabriO cable car and a revolving restaurant.
Great different opportunities to reach Pilatus from two sides. A lot of activities (e.g. rope park)
And many many other scenic places where to spend the day out.
Find more on https://www.myswitzerland.com/en-ch/home.html