Zip-lining is a great way to reward yourself after a hike and offers great views from the surrounding areas.
Given the landscape Tyrol is ideal for Ziplining as the following location highlight nicely.

The flying fox at the Schlegeis dam in the Zillertal lets you soar through the air next to the wall of the dam at 131m above the ground. And all of that for just 36€ (April 2020). You can find a video of the flying fox here.
In Serfaus-Fiss-Ladis, approximately 70 minutes from Innsbruck, you can find several zip-lines as well as the Fisser Flieger which allows you and 3 others to zip-line head first next to each other. Use the zip-lines to descend the 2000m and reach top speeds of up to 65kph. Details here.
Another area offering flying fox / zip-lining can be found at Längenfeld in Ötztal. For 70€ per person you can soar up to 80m above the ground. Their tour also includes abseiling elements and when hiking you can make use of elements from the tour to speed up your descent. Further details can be found on alpin-guide here.