Seconding what most said already...Trail Peak is a fun half day hike; Cottonwood Pass is really lovely, ticks alot of Sierra boxes (trees, open views, spring flowers), as well as Trailmaster peak. Definitely a drive to the White Mtns will give them some oohs and ahs as well without worrying about conditioning. Those should be a really fun 2-3 days trip with great views all close to LP. If you're feeling adventurous, drive up to Cerro Gordo! have fun! Gaylor Peak is a super pretty peak/trail too...
