I haven't set up my beach bag yet, but if I had to pick one plug that'll never leave it, it would be a 1-1/2 oz Superstrike needlefish in olive over silver.
Canal plugs:
Hawg Hunter pencil poppers in pogy, mackerel (green and pink) and squid colors.
Mike Fixter pencil poppers in pogy and squid.
Gibbs Canal Special, 3-1/8 oz, in yellow.
Gibbs 3-1/2 oz pencil popper, yellow and green mackerel.
Gibbs Polaris in yellow and green mackerel.
Medium Hawg Hunter polaris-style in squid, pogy and black over silver.
Superstrike polaris style in yellow and olive over silver.
Jigs:
Canal style round head jigs in assorted weights, from 1-1/2 to 5 oz (yes, there are places where you need the 1-1/2).
Rigged plastic--Sluggos, Fin-S fish and Ledgerunners, on 1-5 oz heads.
3 and 4 oz Crippled Herring and/or diamond jigs.
2 and 3 oz Ronz eels.
6" and 9" rubber duckies
