What Workbench Safety Improvements Have You Made?
Here are some precautions I take... they might be a little excessive but I'd rather play it safe.

Soldering:


Cheap solder extractor.
Simple, clear glasses to protect my eyes against bits of metal flying away from my side-cutters.


PCB Manufacture:


All-round protection goggles to try and keep my eyes as dust/chemical free as possible (and to protect from a shattering drill bit).
Wet-wipes for cleaning the area after drilling (wet to help pick up the loose particles).
A fine-dust mask is important when drilling due to the toxic effects of FR2 and FR4.
Good ventilation (either a fine-dust extractor or lots of open doors and windows).
Plenty of clean water and rags/kitchen roll for chemical spills.
A neutralising agent for the chemicals (such as baking soda).
Disposable but thin gloves (you don't want nasty chemicals lying around on them for too long).