In the first moment I didnt understood what to do until I read the instructions on your game page - my suggestion is to put some hints how to play somewhere in the game because the mechanics are not selfexplaining (at least for me).
Not sure what to think about the mechanics, but it felt very unintuitive and annoying to me to point and click on an object with the mouse, to which i just moved the player via keyboard. I think a key for pickup/drop would suffice.
The idea with the time machine is great and has potential for fancys puzzles in my eyes!
Maybe a little suggestion here: when using the time machine maybe give the player a clue that this is time travelling (some kind of flying particles, color change or sth. else). On my first play i thought its a kind of sink.
Last but not least I absolutely love the visual presentation. This is the outstanding part of the game.
I think if you keep tweaking the player controls a bit this would be a very nice and interesting game!