Legal ? Depends on the destination state. Will anyone care, different question, unless the recipient ends up in possession of a prohibited weapon and gets caught, probably not.
Is there an economical reasonably idiot proof sharpening kit on the market nowadays ? Just for occasional sharpening of small blades, MT UT type size ?
There's some nice kit out there, Edge Pro, Wicked Edge type ones, but out of my budget right now.
I've sharpened by hand on stones before, but...