Another ever present item in my Peak Design Everyday Backpack is Photographic Solutions Eclipse Lens and CCD Cleaning Fluid. I use this cleaning fluid with Photographic Solutions 10x10cm Pec Pads which I have written about before.
I also clean my glasses with them, as well as my camera body. And other stuff.
And apart from a hurricane blower I don't use any other cleaning kit at all.
Links to Amazon for all these splendid bits of kit to make it easy for you to find them. Yes this is where I bought them all from.
Rick McEvoy Photography