To ease the transition back to school, you can pretend you’re still on vacation by using Google to “tour” the national parks through online exhibits. These are artifacts from the parks that were curated in celebration of the National Park Service Centennial in 2016, showcasing one object from every national park museum collection.
For example, check out the collections from Colorado’s national parks, with everything from hiking safety helmets from the 1970s to a projectile point from ~6,000 B.C.E. There are also short descriptions of why the object was chosen for the centennial.
You can use these objects to get your students back into “historian” mode: why were these objects chosen? Are there other objects that would have been more appropriate? Can they make a convincing case for the alternative? And more: what was the object’s context when it was made? When it was used? When it was found? Now?
And technically, this is a different part of Google altogether, but you could wind up your mini-vacation with a virtual stroll on the beach: Fire Island National Seashore (which has an object in the NY collection), via Google Maps Street View: