Only when we were kids, with self-employed parents. We spent 6 lovely weeks every year at dads beach shack, and in fact every other holiday.
Do you have a tent? You could do a camping trip, say over the 6weeks, move to 3-4 different campsites, with enough around each site, to keep you busy for 1-2 weeks.
eg, beach/lake/mountains, vineyards, wandering around lovely villages, archit/historical/museum things. You could do that anywhere in Europe really.