Smallies will eat most anything that'll fit in their mouth.

Crawdads/crayfish are a favorite.

Any type of crayfish plastics work well, as do tubes.

And nothing beats catching them on topwater! My favorite topwater lure
is either the Rapala Skitter Pop, or Skitter Prop.

Largemouth will also eat anything (fish, frogs, mice, little birds,
lizards, dragonfly.....)

For starters, get yourself some spinnerbaits, plastics worms and tubes,
some topwater baits, jig n pig, a few jerkbaits, and maybe a Johnson
Silver Minnow...and you're good to go!