I think having Romanian salami or deli is the epitome of oneg shabbos.
Other examples: singing zemiros at the table, saying divrei torah at the table, reading all the shabbos bulletins from all the different places that accumulate at shul, going to shiurim and classes, bikur cholim visits (On the UWS, OZ has a group that leaves from in front of the shul and walks over to Mt. Sinai), going to a Friday night oneg shabbos/tisch in the winter months, where people have nosh and mashke and sing and say divrei torah, shabbos afternoon walks and a nap, a nice shalosh seudos, learning with your children if you have kids, doing chazora on your learning from the week, etc.
I think shuls should organize more activities for shabbos.