On Isle Delfeno, on the docks(not the one with the boathouse) you will
see a plot of land with water in between you and it. After going into
Banico Hills for the first time, a building will open its doors, go
in, and talk to the person inside he will want you to bash all of the
boxes, if you compete this task in time, he will give you a shine
sprite. You may
do so twice, though each time is harder than the last.