I've been wearing a flying suit since starting to fly aircraft with sticks rather than yokes, as even a small sizes kneeboard kept getting in the way. I've made up some mini sized flight planners which fit into the pockets so that all my en route frequencies and headings are to hand. It seems to work very well.
Also wear the suit for Yak aeros to stop dispersing the contents of my pockets around south Cambridgeshire, where they're anti aeroplanes anyway - no need to give them any encouragement - and gloves to keep a firm grip on the stick!
Haven't got a helmet yet, maybe next year.
Where I fly from, we had a Cessna 152 crash and burn on the runway although the pilot got out OK. Made me think that a bit of extra fireproofing might be a good idea even when flying in spam cans. You never know!