General:
* All over the place: This implies scattered and not in any particular order.
* Everywhere: This is more straightforward and simply means in many places.
* Around: This is more vague and could mean in the general vicinity.
* Scattered: This emphasizes the lack of a central location.
More informal:
* Here, there, and everywhere: This is a playful way to say "here and there."
* Hither and thither: This is a more literary and archaic way to say "here and there."
* Randomly: This implies a lack of pattern or purpose in the placement.
Specific to a particular area:
* Around town: This refers to a specific location like a city or town.
* In the neighborhood: This is more local and implies a smaller area.
The best choice will depend on the specific context and desired level of formality.