iraya:

baby Frodo sneaks up and surprises Tharanduil lol Imagine Bilbo and Thorin taking him to Mirkwood as a courtesy to Tharanduil to meet the newest addition to the royal family

Frodo being a baby hobbit, he doesn’t know how soft and quiet he is and keeps accidentally sneaking and surprising all the elves, much to Bilbo’s horror and Thorin’s amusement.