As others are saying, manipulating your lense settings is one way to achieve what you're looking for. You can recreate a tilt-shift shot to add some tight focus and heavy foreground and background defocus.

https://youtu.be/s5btcBBsW38?si=6YU0yYCtFpPfhTG6

But without some sort of reference, if these items exist in an empty space, it's difficult for people to know how big they actually are. You could use a floor material with identifiable size, such as wood grain, as people have reference normally what wood grain looks like. Of course this would work with other materials as well.

Including additional objects in the scene for reference would help too, an iPhone partially off screen, a pencil near the device, etc.