Would do: Anything? Almost anything? Try me.
Would not do: Sit for eight hours each day for a year in a pitch black room, no sleeping (thought about it for a minute and nope! I didn’t even know that a phobia sitting in dark rooms alone for extended periods of time was a thing, but I can now report: It is a thing. Not doing it, never doing it, need a Xanax just for thinking about doing it.)
(Jon Cotner sent me this while sitting in a small dark room for free.)