|Stir fried bitter melon. May be a good substitute for maror.
And then there's the roasted egg.
Despite the name, the roasted egg is really hard boiled, but then lightly roasted. Unlike the other items, the egg isn't Exodus specific - alternate interpretations call it a stand in for the usual offerings the Israelites bring to the temples, or as a symbol of mourning. Some rabbis affirm that the egg is optional in the seder meal (usually, it's eaten as an appetizer of sorts after being dipped in salt water).
Archeologically, we can interpret this as just another remnant of the usual fertility symbol during spring - essentially a distant, somewhat scorched and less dressed up cousin to the Easter egg.
The best explanation I have heard about the roasted egg came from a colleague of mine, and it's Exodus specific. The story goes that when Moses parted the Red Sea, the path ahead wasn't dry land. Rather, there was still enough water such that people had to wade across hip deep. And the dipping of egg in salt water reminds us that Moses had to have his cojones in seawater during the escape.