An interesting thread with a lot of good inputs. I think one basic input is that a lot of us, me included, have been and will continue going out on our own knowing that Accidents of any type and our own minds are our enemy. Night sounds and such are disturbing only if we let them.
So for myself I've a solid first aid kit I carry with me and it includes the items seen in the photo above. On the far left is an "Emergency Bivvy" made by Adventure Medical Kits that weighs 3.8 oz. It is a metalized polyethylene bag shaped like a sleeping bag that holds in 90% of your body heat and will help to keep you in better shape all night long so one does not have to sleep out in the open with nothing to protect them.
The next items to the right are an orange plastic emergency whistle and man is that thing loud, I stick it in my mouth and then plug both ears and then blow. Underneath the whistle is a "SPOT Messenger", a GPS based device that you send out a message to the people you want it to go to. The spot sends your message as well as the time of day, the date, Latitude and Longitude and it alone WILL save your life. It is a little pricy, it can be found on-line for less than MSRP, and then there is the yearly service fee BUT IF you ever Must press the 911 button a helicopter will be over your head in about 3 hours. Ask here if you want more info.
Next to the right we have a Petzal brand Backpackers Headlamp and these are also pricey but again you do get a certain amount of value for the money. First up on the value list is there is a built in monitor so the batteries last for a long long time. There are usually two or three levels of lighting that you can choose from to further conserve battery life. Some come with a selection of white light or red light, most come with a Strobe Lighting Effect (blinks on and off) which can be seen at night for miles! Then it is a headlamp so your hands are free and when you turn your head the light goes right along with that movement.
And on the far right are Two (2) inexpensive butane lighters that last for quite some time in the unused state (years) and if one goes dead then you have the second one to start a fire with. Not pictured is a pump style water filter, it just keeps you healthy so you are not doubled over in pain or needing to eliminate every five minutes. Oh, and if you've never needed to use dry leaves to wipe with try it and I think you will only do it once so carry TP with you in a plastic bag every time you leave camp.
Yes the above items can add up to around $350 but then how much is your life worth, how much does it mean to you to not be in discomfort or flat out pain for as short a time as possible or to be able to get back home. I thought the SPOT Messenger was a useless item till I needed it the first time, needing it once convinced me otherwise! Needing any of these items and not having them can be the difference between living or dying a really cruel death alone!
OH, the white thing under the headlamp is just a prop to show off the headlamp better, it's dental floss that can be used to sew up a nasty wound if necessary, and yes I do carry a sewing needle that the floss goes into.....................63bkpkr
And no the Cheeze Its are not part of my kit though I do enjoy them at home when I'm not trying to loose the 30 lbs I currently need to loose. Loose the thirty and get back into my wet suit, YES! And yes I have carried the complete thick wet suit in on several trips but then I'm just a bit nuts. Have fun everyone and be safe!
And finally, while I'm at it, this is the Insurance Policy I carry on my life and self specifically for being out in the wilds alone.
And I do NOT leave home without it!! It's a chopped and ported Super Redhawk .454 and the shortened barrel was necessary to keep it out of my way while cliff climbing. It is LOUD!!!!!!!
IF the bones at your site are of tiny animals then maybe a bobcat or similar sized animal, if you are talking about Deer Bones then a mountain lion. Any cat regardless of size is Bad News and it will be a stealth attack IF at all. Of course bears are no fun either but where you are they will be well fed anyway and will be looking for the opportunistic easy to get at food bag but a chance encounter with MaMa and cub is
Not Good!
Two streams came together right where I was camped, so I had asurround sound of unidentiful things all around me. Kept drinking and waiting to die. Passed out with beer bottles all around me. 
