Also just like the one-touch-reset timer you find on lots of Cessna Nav panels.
I use my jogging timer for flying, that has a one press reset function like the elapsed time ones on the ADF panel, it cost about a tenner I think, big clear display and instead of putting the rope around my wrist I hang it off the yoke, or you could thread it onto your knee pad.
I use the AIP for all of my airfield plates too. I print off the ones I commonly use and keep them in my knee pad, check the dates regularly obviously. For instrument approaches instead of printing off the A4 size plates on the AIP, the RAF do a book of plates that are A5 size and they again fit neatly into your knee pad.
I think there's something nicely infra chic about using non standard stuff. My £6.80 Casio special keeps time as well as any Rolex Oyster and my battered old briefcase makes an ideal flying bag.
I might add also that if you mention the word 'Wedding' to any caterer or room hirer then their eyes light up as the bill automatically doubles.