Tools and equipment of food and beverage services?

Here's a very basic list -- you can always try shopping online for more stuff:

Chafing dishes (which need chafing candles and different size pans), serving spoons, tongs, dinnerware (either actual plates or nice-looking disposable ones), flatware, and an insulated bags (for transport of food if not being prepared on site).

Mission Restaurant Supply has everything you need when it comes to catering supplies. I've been in the business for a few years and I even use my stuff for parties I throw at my home.