Need a pur… satchel? The Rothco canvas medic bag
($13 on Amazon) is a great size if you need to carry a tablet and
keyboard along with some other stuff. It’s served me well for two and a
half years, and held up to the beating I’ve given it. The canvas isn’t
purely waterproof, but it’s kept stuff dry in the rain just fine. I
put my old unit pin across it just because I could. 🙂