A few words of advice from a former Crime Scene Attender of the local Plod. In general people are very lax about security particularly with sheds and garages, and the chances of the offenders being caught and the valuable property being returned are almost nil. In my two year stint in that job I attended 2000 offences and I believe there was only one 'Detected'. That sounds appalling but it really wasn't through lack of trying. No witnesses, no forensic evidence and poor security mean't that the offenders always had us and their victims at a great disadvantage.
Sheds and garages. Time and time again We found the shed or garage fitted with a £2.50 mickey mouse padlock even though the property inside was worth thousands. Lawnmowers, stainless steel garden tools, power tools and titanium mountain bikes, all protected by cheap junk. Buy a really good quality padlock.
Hinges. How many people fit carriage bolts to their hinges? Hinges are almost attached with Posidrive screws and offenders often unscrew them and lift the door away from the frame rendering the padlock useless. Carriage bolts have round heads and cannot be undone from outside. When screwing into thin timber, add a decent piece of timber for the screw to screw into. My garage has sections of 4x2 glued in place, to allow the long screws something decent to screw into.
Bikes. Have you considered having your bike postcode stamped? As a local Bobby, I regularly used to do it. I'd stamp the owners postcode and house number into the frame and under the bottom bracket, so that should the bike be stolen, we'd have a fighting chance of returning the bike to the rightful owner. Obviously the stamping chips the paintwork but I used to go over the postcode with nail varnish thereby preventing rust. And when a yoblet is stopped on the bike and the bottom bracket checked, how will he explain the postcode he knew nothing about?
Shed/garage alarms. These battery-powered devices are as cheap as chips and at one time our local Police Station sold them to the general public. They don't cost much more than £20 or so which is peanuts when you consider the value of the objects at risk.
Just something to think about, Ladies and Gents.