In reply to stemill:
While you're in Dovedale, a quick spin up Thorpe Cloud gives a definite peak.
But be a bit adventurous - just took the 5yo up Tryfan North Ridge. If you have a short bit of rope, there are no worries about long drops and the like. The only problem would be, after that everything else would seem a bit of an anticlimax.
(The 5yo also recently went all the way up to Annapurna Base Camp, with the Phedi-Dhampus start. Kids are surprisingly tough)