You're right, some hints would help. After placing it on the table you can interact with the bags to fill them with blue stuff, after that interact with the empty box to pack it. Then you can grab it and release it in the delivery spot.
Watching the gifs will give you an idea of the flow of the game.
Managed to get to the rainbow section and a little stumped on what to do. Waiting for the bar to fill up was also a little monotonous. Needs a little more guidance and given the interaction with the various devices, some clues as to what can or cannot interact would be useful. For the package delivery my package often gets stuck at the door as well. I like the chill radio tunes though and the vector artwork is refreshing and cleanly done.
