It's simple, and it's fun to play for a while. But does get a bit repetitive for me.
I think some of the requests should be doable with only 1 hand, while others need both. Or maybe give the player some movement penalty when they carry more than one item. Give a little decision making for the player. And to add a little path variation, maybe put the elevator in the middle. Make them brain think slightly more when exiting the elevator and/or going to the work station.
But that's just my opinion.
Art style and music, I like it. Nicely done.