I have quite a few pedals - too many in fact! If I'm honest I don't tend to use much more than an octaver, compressor, chorus and distortion and the rest is just 'board candy' or gathering dust in my music room.
Generally I expect funk players to have a synth or auto-wah, metal players to have distortion, slap players to have compression etc, so .............
Presuming that a tuner is pedal number 5 - what other 4 pedals/effects should never leave your board/rack?