...as you do, I decided to dig out the sharpening stone and do the job properly.
Cue long search for said stone, which turned up a) the stone, and b) every other pocket knife I own.
The one I have carried around for the last decade and a half is a Victorinox Cybertool 34 (bottom left), a cracking bit of kit that has been endlessly useful, particularly as I mess with computers a lot, which is of course its function and why I have it.
The rest are various flavours of Swiss Army Knife, or Opinels in varying sizes:
The foreground Opinel, a stainless steel blade version, was a Father's Day gift while at Les Eyzies de Tayac in 1994 or thereabouts. The other carbon-steel ones have been acquired over time, the tiny one bought merely because I saw it and decided I couldn't live without such a dinky little knife. Never used it for anything, mind...
Anyhow, all now cleaned and sharp, and hidden away until the next time I remember they exist!