There is no "easy" instrument to get a scholarship with. If you put time and effort into any kind of instrument and try out for All-Districts or All-States and make any of them you have a higher chance of getting a scholarship. So just practice and become a better player. (there is no easy road)
a piano
Recorder probably
Whistle
drums i think!
kazoo
The Piano.
The recorder is often considered the easiest woodwind instrument to learn to play because it has a simple fingering system and is relatively easy to produce sound on.
All string instruments can be difficult to learn, but the violin may be the easiest to learn.
Easiest project would be to create a stringed instrument of some sort.
The world's best selling instrument is the harmonica, considering they are one of the easiest instruments for anyone to play.
Type your answer here..ya
Scholarship.