Hi jafe -
I'm not a lawyer, so this is not legal advice, but some thoughts....
Seems to me like you could combine the funds, especially if you were truly careful about using separate funds/checks/etc. That said, I'd still probably *not* do it that way. Seems cleaner to me to spend those dollars uniquely/separately.
On bylaws, there's always this "chicken or the egg" issue. Basically, a group of concerned folks can get together and write the first version. That version will have (presumably) language on how the first version is adopted and how it can be changed/amended. So there is a good chance for input and changes of mind.
Our National PTO Network (
www.ptotoday.com/npn
) includes a 60-page Expert Guide called "PTO Start-Up" that covers all that in great detail. All you need for the bank account is a unique FEIN (federal employer id #), and you can get that in less than a week from IRS. (That's also covered in detail in Expert Guide).
Tim