Case Pocket Knife with modifications.
The all purpose, go anywhere, indispensable handy-dandy pocket tool. Sharpen pencils, cut the foil from wine bottles, open those pesky blister packages, clean the gunk from under finger nails.
Mini-Copperhead with pen blade and Wharncliffe blade. I've modified the pen blade with an indent at the top, and I leave the last 1/4 inch dull, for cleaning gunk from fingernails. The rest of the blade is very sharp, as is the Wharncliffe.
If one was so inclined, it can also be used as a carving tool. Wow!