In NW PA - Erie Area
Presque Isle State Park - no camping in park itself, but Sara's Campground near entrance. PI is open all year, but don't know about campground. Other campgrounds in NW PA may be open
Tom Ridge Environmental Center - near entrance to PI [URL]http://www.trecpi.org/[URL]
Maritime Museum and U.S. Brig Niagara -
http://www.flagshipniagara.org
Erie Art Museum
http://erieartmuseum.org
ExpERIEnce Children's Museum
http://www.eriechildrensmuseum.org
For a little indoor R&R, Splash Lagoon water park
http://www.splashlagoon.com
There are many vineyards and wineries in NW PA and Western NY. Many of the wineries give free tours.
http://www.pennsylvaniawine.com
Western NY
Grape Discovery Center Westfield NY
http://www.grapediscoverycenter.com
For some outdoor fun, Zip lines and Aerial Adventure Course at Peek'n Peak
http://www.pknpk.com/activities/mountain-adventures/