Well, PSA was not exactly known for their meal services (but who needs a hot meal on an hour flight?). So, we have to settle for the beverage services. (This page has some of the most unusual items ever displayed on a web page - why would you want a scanned Sweet & Low packet anywhere else?)

Up through the 1960's, PSA offered Coffee, Bouillon, and Punch. Champagne was offered on some flights, and later, the beverage selection was enhanced.

PSA's Smile Hour beverage service card, circa 1981 (left) and 1984 (right.)

Drink tokens, 1981 (left), 1985 (middle), 1987 (right). Bottom row: Executive Flyer drink coupon (1985), coupon (1976).
Stew Saver coupon, late 1960's. This was given out if stews didn't have enough change.
The Budweiser Clydesdales make the first beer delivery to a PSA Super 80 in San Francisco (bound for Burbank.) Budweiser and Natural Light beer was offered on all flights, starting in October 1981, thanks to a new thermal storage system installed in the aircraft (actually dry ice in cardboard boxes).

When PSA finally put meals on the aircraft, a whole new set of service items were produced.

PSA placemat, late 1950's. Right: Peanuts, 1980s.

PSA napkins - 1977, 1981, 1985, 1984, 1985, 1986, and 1986.

Left: "Pudgy" Swizzle stick. Top: 1970's Swizzle sticks. Bottom: 1980s Silverware pack (Silverware, napkin, salt, pepper, handwipe.) Bottom right: 1980's Sweet & Low pack.

Left: Creamer packet. Right: Honey Roasted Peanuts. (Dan/Sara Gradwohl)

And, to pick up all of those used meal trays and cups:

Trash bag, circa 1979. Note the colored PSA titles (a slight green tint inside them.)

Trash bag, mid-1980s.

Tucson reboarding card. This was given to through passengers if they deplaned at Tucson, and turned back in with a boarding pass (ticket receipt) when the passenger reboarded the aircraft. (This doesn't go with the in-flight theme, but I don't have a place for it right now anywhere else.)