You may be finding excellent bargain kitchen timers but are they fit for purpose.
Fly back stopwatches rule. In a kitchen 3 presses to reset is fine but as 24carrot says in an aircraft the single press 'fly back' function saves literally thousands of pounds. Any three press stopwatch in an aircraft is guaranteed to leave you staring at a 00:00 display after one minute because they are just too hard to operate in a pressured ( ir test) cockpit environment. I tied with an Argos stop watch and threw it away in favour of a fly back stop watch when my ir instruuctor explained to me what 'fly back' means. When you understand it you will do the same.
The treasury tag gengis mentions are great. But for uber cool checklist security try these
Flexi-Lock Checklist Ring XL. Their kneeboard is excellent too.
So the saying goes, buy cheap buy twice. Or in aviation terms several hundred times. The stuff is expensive but the market is tiny.