A computer, a external hard drive, my cellphone, a copy of Plutarch's Moralia, a nalgene that could double as a petri dish (I should probably clean it...), and (most importantly) my rock collection:
A Silurian age schist, a Devonian gneiss, a cretaceous sandstone, a Cambrian granite, a turbidite, a piece of basalt from the Cascade, and (my personal favorite) a flawless quartz crystal the size of my hand!
A Silurian age schist, a Devonian gneiss, a cretaceous sandstone, a Cambrian granite, a turbidite, a piece of basalt from the Cascade, and (my personal favorite) a flawless quartz crystal the size of my hand!