You need a bigger bag.
Then you can carry all of you lovely little gems and not leave any of them at home feeling unloved.
I use either a slingshot 300 or a Flipside 400AW or a Thinktank Airport acceleration V2.0
in the 300 (my usual bag) I can carry a K-5 and grip, 540 flash, DA15, DA21, FA31, FA43, FA77, and DFA100. Plus DA 16 -50 AND DA 60-250 (or 50-135)
The flipside is for travel, I can get almost as much in it, but it is more secure I feel, becasue the opening is on the 'inside' and against my back when I carry it.
The Thinktank is huge and I can get lots of other gear in there. It is for studio or workshop shoots where I dont have to carry it far, but want maximum flexibility and as much gear as I can carry.