Here are some fun gambits that you might not know. They don't have a great reputation, but are somewhat playable, if only in casual games.
-Kentucky Gambit (W) (1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. Bxf7+?! Kxf7 5. Nxe5+) Makes the Fried Liver look passive.
-Duras Gambit (B) (1.e4 f5) Stockfish gives this position +1.2, which is the same as the Czech Benoni. Obviously, ...Nf6 after exf5
-Hector Gambit (W) (1.Nc3 d5 2.e4 dxe4 3.Bc4)
-Zuckertort Gambit (W) 1.Nf3 d5 2.e4
-Paris Gambit (W) (1.Nh3 d5 2.g3 e5 3.f4) Just in case you need a gambit line for your 1. Nh3 games
-Kentucky Gambit (W) (1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. Bxf7+?! Kxf7 5. Nxe5+) Makes the Fried Liver look passive.
-Duras Gambit (B) (1.e4 f5) Stockfish gives this position +1.2, which is the same as the Czech Benoni. Obviously, ...Nf6 after exf5
-Hector Gambit (W) (1.Nc3 d5 2.e4 dxe4 3.Bc4)
-Zuckertort Gambit (W) 1.Nf3 d5 2.e4
-Paris Gambit (W) (1.Nh3 d5 2.g3 e5 3.f4) Just in case you need a gambit line for your 1. Nh3 games