i could see one at the riverfront park here. lots of general day traffic and bike traffic. might be risky at night though. maybe even stick a smaller one closer to the skatepark for more traffic and maybe put a skate tool or two on it also. or maybe at the bike rental spot. actually i've never checked, but i wonder if they loan tools or help out in some why since they're right there. if nothing else, that would be a good spot for it.
i carry an oversized leatherman belt thing that holds a vice grip version of a leatherman and a 6"adjustable wrench. so far nothing has broke so serious that i couldn't fix/adjust it with those, but a pump might be nice.
hmmm... i'm wondering if an idea could like be seeded. if there's nothing at the bike rental spot, i think i'll check the price of some foot pumps i saw at a flea market. it wouldn't be much, but maybe strap it somewhere with the best guess of it staying put and see how long it last. if i can get one for 5 bucks or so, where i wouldn't be out much, i may try it. maybe see if it becomes a thing people watch out for and protect, or maybe add to or something. or catches the eye of some city official.