You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For consistency, answers should be in all lower cased letters.

Category: AROUND THE HOUSE 
Clue: A silent butler is used to collect these during or after a meal
crumbs

Category: FILTHY RICH 
Clue: Worth over $15 billion, Robson, son of Sam, runs this company, the USA's largest private employer
wal-mart

Category: GET OUTTA MY DREAMS 
Clue: I dream of exploring this Hawaii national park whose name refers in part to Kilauea

volcanoes national park