Really good idea, enjoyable, and different to everything else in this jam. The art and music is really nice, and the pace of the game is good.
If a floating item is over an item in the grid, when you click it usually grabs the grid item, which could be a little frustrating, as in my opinion the floating item should take priority. Also it needs a win condition when you fill all the space, rather than having to wait for the timer to run out. Not trying to be nitpicky, just trying to be helpful :).
Great job. Well done.