Technically,
It depends on the state you are in. In some states it is legal if you can otherwise legally carry a gun.
they are legal but its illegal to carry or show it on public
no
You can, but, you better have lawyer on speed dial (even if you are legal to do so)
Yes, however you can not carry it with you, concealed or otherwise in public.
It is not legal to carry open liquor in CA either walking or in a car. If you bought a bottle of wine at a wine shop you could carry it around in the bag unopened.
In the UK, it is legal to carry a knife with a folding blade of up to three inches or less in public. This does not include knives with mechanisms that allow the blade to 'lock' into place. Larger blades can be lawfully carried in public provided they are not 'banned blades' and the person carrying them must have a valid reason.
No. What you do to your own body is up to you.
Yes, as long as the tip is still orange.
Do yourself a favor and keep it in the bag.
It is legal to carry a key chain.