It's weirdly fascinating how the "items at risk of being stolen" change; and the inevitable Daily Fail article would give some advice on how to prevent it, which sometimes was actually so inconvenient that it simply wasn't worth it.
In the 90s, teenagers risked having their trainers stolen from their feet, if they were valuable. I heard of this happening before it happened in the book About A Boy.
Car stereos used to be another hot item, you rarely hear about this now. The solution? Ones that you could remove easily, and take with you. 😆😆😆 Who is going to carry their car stereo around at work with them all day, in case it gets stolen? (A later compromise was ones with a removable front panel.) Making it easy to remove means it's much more vulnerable if you do leave it in. Nowadays, they are actually quite difficult to remove from the car quickly, and that's as it should be.
Sat navs were often stolen, when they were novel gadgets in the early 00s, and still quite expensive. The advice was not only to hide them away, but to wipe off the tell-tale circle from the windscreen, which implied that you had one. Nowadays, cars contain valuable dashcams instead, which are usually left in.
And don't get me started on cars with keyless entry - I think that's one of the biggest invention blunders ever, and a massive backward step in car security. Because of this, you now "have to" use a Faraday pouch to outwit thieves, and to replace it regularly. Give me a traditional key to start the car with any day. (When my parents had car keys stolen in the 80s, they were amused that the garage managed to open the door locks with a paper clip, but it was much more difficult and expensive to unlock the steering wheel, and to bypass the ignition key.)