To the future, when you get new tools look at Smartwater as an initial step,
Home - SmartWater Shop this gives your items a unique chemical code that is registered to you, next step may seem a little drastic but works. Mark your tools with a brand, your initials or postcode and this may deface them slightly but it also devalues them to a potential scumbag. I worked for a company where some expensive gear had this strange ability to walk, anything from laptops to expensive test gear and the solution used was simple, we machined a range of branding irons to make permeant markings so the equipment was instantly recognisable and worthless to anyone else yet still fully functional to the company, who would want a disfigured laptop emblazioned with a company logo!