I find it easiest to remember things just because I'm used to them...but I also leave my helmet on the bars. Since the design of CrazyBike2 means my knee goes where the helmet hangs, I can't forget it's there. :lol:
Other stuff, like rain gear, etc., I leave in the cargo pods whenever I'm not using them, during the seasons for that.
I used to also leave my gloves and good leather jacket/pants etc in the pods, but on the unfortunate day of the house fire I had the gloves in the jacket pockets (along with a number of other things like my spare keys and notepad with lots of data and sketches in it, my scientific calculator/etc), and the jacket was in the bedroom that burned. (helmet was also not on the bars that day but sitting in the house, cuz the bike was outside to be taken apart and worked on, but I have a new helmet now...don't yet have new gloves or jacket).
So...leave your stuff ON the bike handlebars or in any cargo carrier you have on it, and it's hard to forget. But really, if you actually *use* the gear, and want to, it ought to be a little hard to forget to put it on.
(everybody does have their braindead days, though, and I have more than my fair share so I shouldn't speak :lol: )