Yes, you can. Take a look at this video that a colleague of mine shared with me months ago. This simulation occurs in a child's room and although no one is in the room, it may elicit emotions.
Much of what was just simulated could be entirely mitigated.
Speaker locations: You could move the location of the speakers and lower their placement. Eliminating the risk of the speakers falling onto the head of the bed.
Standing Lamp: Remove the standing lamp from the room and replace it with another lamp or built in lighting.
Shelving: You could secure the shelving system in the nook to prevent the shelves from falling and you could store heavier items on the shelves lower or add a couple of thin elastic cords to prevent the materials from falling. If this were a stand alone bookshelf you could also secure the bookshelf to the studs of the walls with this product from Quakehold. It is very simple to install and holds heavy furniture well. Although, the adhesive on the velcro will wear over time so check them periodically to ensure they are holding strong.
Window: Although this room is quite small, or so it looks to be, there may not be another configuration available for the furniture, however if there is another configuration available, moving the bed away from the window would be preferred to minimize injury from broken glass. If you are unable to move a bed then we would recommend applying safety window film such as that available at Tap Plastics.
We encourage you to take a tour or your home to identify those areas that could benefit from earthquake mitigation methods. If you would like an extra set of eyes to help you evaluate your home, we are happy to offer home consultations and reports for you to identify gaps in your existing plans and ways to make improvements, such as these identified above.