You could stop at the
http://www.kellerhaus.com/tradition.htm in Merideth, for ice cream.
Mmmmmmmm.....Ice Cream!
Wolfeboro is good. The Wright Museum is there, Don't know if the Clickity Clack railroad would be open, Take them for a ride down RT 109. Just like going on an amusement park ride.....
It's too bad thing like the Hobo railroad don't open earlier for the school vacation weeks....
If you wait til MAy 1st the Squam Lake Nature Center opens on that day. One of my favorites....
http://www.nhnature.org/