How to pull toothbrush out of the sink?
In my part of the world, PVC P-traps for sinks and basins are universally designed so that you can easily remove the U-bend from below without tools.



I wouldn't hesitate very long before undoing all the obvious nuts visible in your picture† and attempting to gain access to the U-bend.

In some cases a strap-wrench may be useful, but usually those joints between PVC sections are sealed by a simple rubber ring and shouldn't have any kind of putty or sealant applied (which can make them hard to remove by hand)



† Obviously, except the one on the flexible tap connector(s)!