Your knife comment made me laugh - we got so frustrated with crap knives, we bought a set of 3 that we travel with - serrated, carving and paring. . . .
We bring knives on non-diving vacations, but on this trip we ran up against the 50 lb. weight limit. I guess we chose the frozen steaks over the knives. Carry-ons were stuffed to the gills, too. I should have mentioned I brought two wetsuits: a 5mm in the checked bag, and a 3 mm in the carry-on. I did the very first dive with the 3 mm, realized that I would be chilly if I did that three or four times a day, and used the 5 mm for the rest. Even then, I found myself feeling ever so slightly cool by the end of a 50-60 minute dive on a site with no current.
But back on the knife thing, although the unit had no serious utility ("chef's") knife, what we did find in the drawer were two different tools for carving cheese: a "plane" as I think it's called, and a wire cheese cutter. The Dutch don't mess around when it comes to cheese. Bring on the giant wheel of gouda.