Conntek 60129, 15A Assembly Straight Blade Plug with NEMA 5-15P Male End, 2 Pole-3 Wire, Conntek, Mfr#: 60129$14.29+
15 Amp 125V Grounded Repl Plug Heavy-Duty w/Rubber Grip UL Listed, Easylife Tech, Mfr#: 0-1115-R$6.15+
30A 4-Prong 125/250V L14-30P Plug to L14-20R 20A 4-Prong 125/250V Connector, Ac Works, Mfr#: ADL1430L1420$28.99+
Conntek 60201, 15 to 20-Amp Straight Blade Connector with NEMA 5-15/20R Female End, 2 Pole-3 Wire, Conntek, Mfr#: 60201$17.99+
Conntek CS6364, 50-Amp CA-Standard Connector with NEMA CS6364 Female End, 3 Pole- 4 Wire, Conntek, Mfr#: CS6364$157.99+
Conntek 60311-YW, 30-Amp Locking Assembly Plug with NEMA L5-30P Male End, 2 Pole- 3 Wire, Conntek, Mfr#: 60311-YW$31.75+