The most common and most likely answer to this crossword clue is the 6 letter word DOODAD
D
O
O
D
A
D
More clues leading to the result DOODAD
Buddy explains!

The straight part
We know that "gadget" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case gadget = doodad.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does DOODAD mean?
DOODAD noun- A thing (used in a vague way to refer to something whose name one cannot recall); especially an unspecified gadget, device, or part.