Is there a list of businesses offering discounts to senior citizens for their products/services?

No list. Just pull up to the place, ask if they offer senior discounts and if they do, get it!

Maybe you could make a list of where you spend the most money, which 10 places, and every day for a week, call 2 of those places, and ask them "do you offer a senior discount?". Vendors probably don't advertise it very much, I have found out a few places that offer it only because my mom would ALWAYS ask for it (even at the doctor and dentist, what a great sense of humor). This way you would have your personal list, and you might discover "hidden" or unadvertised discounts.

Yes-AARP, Groupon, Living Social plus retailers offer discounts.

I purchase everything for my parents on ebay and amazon. the nice thing about purchasing on amazon is that all products are rated! this is very helpful. I check the same item on both sites before purchasing...looking for lowest prices. I buy these great, thick, long pads by bulk...on ebay. the company is very well known. put those in diapers...and usually just have to change the pad...i save thousands of dollars thru the years...cause the diapers cost a lot!

I did contact the CVB, but they never responded.

I don't know of one, have you asked the local Chamber of Commerce? Maybe by expressing your interest in a list such as this, they will spend the time to develop it.....and you'll not only gain the info for yourself but many other seniors!! Win-win!!