Quick release saddle bolts? I need to find a way to easily remove the saddle on my folding bike.

Solutions from Zefal (Lock &amp; Roll) or Pitlock/PinheadComponents/AntiVandale aren't usable because they're meant for regular bikes, where adjusting the saddle is uncommon once set, while folders require adjustment every time the bike is folded/unfolded.

I was wondering if some company made a quick-release saddle bolt, so that I could easily take the saddle with me and leave the seat post.

That doesn't prevent some ass*e to take the seatpost just "for fun", but it reduces the risk and it's a lighter alternative (seat posts on folders are bigger and heavier than on standard bikes).

Thank you.
Replace your hex seatbolt with a knobbed or winged bolt of the same strength and sizing specifications.  

Clamping knob:  

Wing screw:


(I happened to see these at http://www.jwwinco.com/products/section8/, but do not know if they are up to spec. @WTHarper mentioned the McMaster-Carr site that has lots of options.)