As other have posted, a bit of jelly on the hands is not much trouble.

As for storage, I like to use plastic straws, cut in 1.5" long pieces.
A lighter to heat the plastic and the pliers of my Leatherman to seal one end ; then bits of jelly (slightly) soaked cottonwooll are pushed inside the straw ; lighter and Leatherman again, to seal the other end of the straw.

No leak. No mess in the PSK.