What safety gear do you carry?

I was just wondering what safety gear people carry - or deem neccessary for day walks, particularly if they walk alone.
I do ocassionally do stuff on my own - hike, scuba dive, four wheel drive; but i have safety parameters in place. There are maps at home and someone always knows which area i am in. When i dive alone, i call Jude (wife) before i go in and when i get out. If the "I'm out of the water" call doesnt arrive within 2 hours, she knows what to do. Same when i hike or "go bush in the Landie"
That aside, what do you take with you when you go hiking as safety equipment in case something goes wrong? I havent been hiking long and don't belong to any clubs but i have brought a lot of ideas and training over from my diving and my Army days. When i hike, as i am training, i am carrying my full Black Wolf "Bugaboo' backpack complete with sleeping bag, tent, stove, the whole kit and kaboodle so if it all goes wrong, i can at least keep dry and warm. Aside from a compact first aid kit, i also have a signalling mirror, whistle and high intensity strobe (see pic) which i use for night diving (so my buddy knows where i am) and apparently can be seen over still water for a 4 km radius,( although i have no desire to prove or disprove this). i feel this would be quite handy should i be lost at night. i also carry two torches (one self powering, the wind up type)
i also have a "survival kit" in my daypack which has waterproof matches, a few metres of string, a copy of morse code, international ground signals and a few other bits and pieces.
As i have no desire to be on the 6 o'clock news, like diving, the plan is to go down, come up and dive another day. Same with hiking. Does anyone else carry similar items?
I do ocassionally do stuff on my own - hike, scuba dive, four wheel drive; but i have safety parameters in place. There are maps at home and someone always knows which area i am in. When i dive alone, i call Jude (wife) before i go in and when i get out. If the "I'm out of the water" call doesnt arrive within 2 hours, she knows what to do. Same when i hike or "go bush in the Landie"
That aside, what do you take with you when you go hiking as safety equipment in case something goes wrong? I havent been hiking long and don't belong to any clubs but i have brought a lot of ideas and training over from my diving and my Army days. When i hike, as i am training, i am carrying my full Black Wolf "Bugaboo' backpack complete with sleeping bag, tent, stove, the whole kit and kaboodle so if it all goes wrong, i can at least keep dry and warm. Aside from a compact first aid kit, i also have a signalling mirror, whistle and high intensity strobe (see pic) which i use for night diving (so my buddy knows where i am) and apparently can be seen over still water for a 4 km radius,( although i have no desire to prove or disprove this). i feel this would be quite handy should i be lost at night. i also carry two torches (one self powering, the wind up type)
i also have a "survival kit" in my daypack which has waterproof matches, a few metres of string, a copy of morse code, international ground signals and a few other bits and pieces.
As i have no desire to be on the 6 o'clock news, like diving, the plan is to go down, come up and dive another day. Same with hiking. Does anyone else carry similar items?