Introducing the K-Pump (Mini), Made in the U.S.A. by K-Pump out of Oregon State
 
A manual inflation option that takes ~2.5 minutes to inflate a packraft
Length - 15''  x Width - 3'' (weighs 1 pound)
Volume 0.3 Gal/1.2L
Includes a check Valve
A low friction manual air pump designed to both inflate & top off the pack raft boat
It floats, has a high visible carry case, and includes a water tight end-cap compartment that is great to store, Cash, Key's, Rings, and other valuables.