Extended walk to the popular Lac Lauvitel
Initial walk up Lauvitel is about 500m over 2-3km taking around 1-1:30 hour (~20% gradient). It is easily accessible for children and adults on well marked paths hence a popular spot. Total loop up and back is estimated to be about 2:30h.
We extended this by continuing to climb to Lac Plan Vienney which is about another 1000m of climbing. We made it to the lac sec at about 1950m, there is probably another 250-300m climbing to make it to the second lac, estimated another 30min to 1 hour of climbing. Weather was changing and we wanted some time to sit by Lauvitel so stopped at the lac sec and returned. From Lac Plan Vienney you can climb to the col above for views of the surrounding mountains.
If you started early enough another option is to climb via the path to the east of Lauvitel and make it to Col de Vallon for views over Lac Muzelle, but this is more than 1000m extra climbing exposed in the sun.
Recommend you stop at the cafe / garden on the way back into La Danchere for ice cream and coffee!