crowd sourcing

Okay, collective brain, I've got one for you. The theme for our Summer Reading program this year is "Dig Into Reading". I went on Pinterest and I'm seeing a lot of bugs and worms and just sorta meh stuff. Usually we do a big craft for the staff to get involved so I'm trying to think of what we can do...I'm leaning towards something archeology themed...

We also do a week long kick-off where we have crafts out and activities for the kids to do. The usual age range is preschool up to 5th grade (yeah, quite a range!). Anyone here have any suggestions for crafts or decorations?

Right now I just want to put up a big picture of Indiana Jones...