Skydive Interlaken is in the heart of Wilderswil, so why not stop by during your stay. It's also full of great shops and restaurants, so you can spend the afternoon having a wander.
If museums are on your list of things to see in Wilderswil, then you might want to head to Gasthof Baeren. If you want to see more of the museums in Wilderswil, you can easily walk to Dorfmuseum "Alte Mühle".