Tallman has sent his aides all over town to research various topics (but they never seem to end up in the right places). (This is a metapuzzle. You'll have to figure out which answers from daily puzzles can be used to solve this one.) (This metapuzzle in particular is inspired by certain puzzles from my previous EnigMarch sets.)

What can you build to win Tallman's approval? Check

Hints: There are no hints for the metapuzzles!