1. Examine the 3rd page of the book on the table
2. Examine the clock
3. Examine the blue H on the tray
4. Enter the code on the green box

5. Take white key
6. Use white key on brown box (same screen as green box)
7. Take axe

8. Examine the 1st page of the book on the table
9. Examine the spines of the books on the table
10. Enter the code on the chain lock

11. Take the stairs and unfold it (red button)

12. Take the green leaves from the pot on the tray
13. Examine the green leaves (including their backside)
14. Use the axe (step 7) to remove the bar in front of the painting
15. Enter the code on the painting

16. Take the bread
17. Use the axe to slice the bread
18. Insert the bread into the toaster
19. Wait a bit for the bread to get toasted (you'll hear a ping-sound)
20. Take the toast, and get a triangle out of it

21. Examine the 2nd page of the book
22. Take the red ball from the tray
23. Use the axe to cut the red ball and get a yellow seed
24. Put the yellow seed in the pot
25. Use the stairs (step 11) to take the spade from behind the clock
26. Use the spade to dig up a watering can below the tree
28. Examine the grey panda-head (middle tray on the left, no clue what it is supposed to be)
29. Activate the sink

30. Fill watering can (step 26) underneath the faucet
31. Water the yellow seed, and take it from the pot

32. Put the sprouted yellow seed (step 31) underneath the tree
33. Water the seed using the watering can (step 30)
34. Move up and use the stairs (step 11, step 25) to take the triangle
35. Combine the two triangles (step 20, step 34)
36. Place the combined triangle on the door and escape

The clues are the colours of the books on the desk (from left to right) and the notes on the first page of the open book on the desk.

First:
On the floor next to the desk so that you can look behind the clock.
Then later:

The clue is the numbered teddy-bear head on the shelves next to the sink.

The clues are the third page of the open book on the desk, the times shown on the two clocks in the room, and don't forget to convert to 24-hour time.

Buried next to the tree.

Make the seed sprout:

Pick up the sprouted seed, replant it in a more useful location, and water it again.

Smash the locking bar with the axe. The clue to how to move the eyes is on the back of the leaves which were in the pot on the shelves next to the sink.

Once you have the bread, cut it with the axe, and put the slices into the toaster on the desk. Look around the room once to make time pass, pick up the toast, and then eat it.