I gurantee that you'll find them in the very last place you look, so just skip ahead to there, and find them in no time
Seriously though, common places for me, tankbag, pockets, ignition (especially overnight

), pillion seat, the side unit, the fireplace, the key hook in the cupboard (amazing, the key fairy must move my keys from time to time, I
never put them there!), the computer desk, on the side in the kitchen, inside my gloves...
... the list does go on... can you tell I look for my keys quite often?