Camp for as long as you like and explore Guiraween National Park. There is plenty of space for tents, caravans and 4x4s. Bookings recommended! Unpowered sites, no cooking facilities but there is bathroom amenities here. It is incredibly peaceful, no phone reception (at least I didn't get any with Optus) and there is plenty to explore. We stayed for just one night, but could have happily stayed for at least another two.
You MUST climb The Pyramid, and we recommend doing it in time for Sunrise. The climb is steep, as is the decent so be cautious and wear shoes with excellent grip. Also wear pants that you can trust wont rip, as you may find that you slide down....! The view from the top is AMAZING especially when the sun is coming up. If you're not an early riser, this is well worth the climb any time of day.