The hike is about 50 minutes to go up. Besides the waterfall, you may access two commemoration sites with a small detour (10 minutes or so): an American pilot grave and a former partisan hospital (ruins and memorial information)
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If you like, when visiting Kamniška Bistrica spring, also take a walk to Predaselj valley, a steep and narrow valley which the river has cut into the rock.
A small lake and karst springs of the Kamniška Bistrica river; the lake is artificial, you will find the acutal springs when you look around the lake, the water comes out of the lime at different places.
This saddle at the very northern end of the municipality offers a great view both to the South and to the North. On the latter, it is the boundary to Logarska dolina, a lovely greenish further valley, which separates you from the Austrian border (which is at about 3-4 km airline distance). You can hike in that direction via the hut "Frischaufov doma na Okrešlju" (1 hr 30 min from Kamniško sedlo, evelation 1396 m) The next peaks you can reach from here are Brana (1 hr 30 min to reach an elevation of 2252 m) and Planjava (2 hr to reach an elevation of 2394 m).
Velika planina (Big Alp) is Slovenia's biggest mountain pasture and offers some great views, hikes and also mountain bike tours (including freeride downhill). Bikes may be rented at the tourist information, however, if you plan tougher tours, especially down the hill, bring a suitable bike. In winter, you can also ski here. You can also walk over to Mala planina (Small Alp), where you find serviced mountain huts which also offer food and sleep possibilities (names and contact information in sleep section, please verify whether they are open before relying on them!)
Finding your way is not always easy, so you may want to bring a map with you. Kamniški vrh is a hike which is popular amongst locals for a short trip (you can reach it in 1 hr 30 min from Slevo, probably about 2 hr from the valley).