Well, it seems like it would be easy to find, but all I have come across is
this site. It is a rubber crowbar, but the price seems pretty steep for such a simple prop.
I'd say you could probably make a crowbar out of sculpting foam with not too much trouble. IT'd probably be the cheaper route, but ultimately it's your choice.
As for guns....that's a trickier situation. According to the current policy:
No guns. No Airsoft. Period. No matter how disabled or how much of the tip you paint orange they are always going to be too close to the real thing.
So, you'd probably just have to come up with some other weapon to carry since it looks like guns are just not allowed anymore.
Anyway, best of luck, hope you get everything sorted! ^_^