In my zipped pants pocket,

 

If you google 'magnetic key box' for a few quid you can buy a magnetic box that you put keys in.

 

Alternatively attach a small hook to your keys and hang them off the suspension coil behind a wheel.

 

A problem with leaving them in the car i.e. under the seat, is that if for some unknown reason your central locking decides to lock itself you are stuffed

And that last parts happens, a lot.

Used to use a key safe that attaches to the car tow eye when I went surfing.

After hiding my wallet, mobile phone, iPad and Rolex in the glove box, I put the key above the sun visor, last place people would look. Then when I am finished it's a simple code 1234 to deactivate the tracker and I'm off home.

 

What could possibly go wrong

 

 

Alternatively attach a small hook to your keys and hang them off the suspension coil behind a wheel.

 

 

 I bought a couple of magnetic hooks for my van off Ebay, works a treat.

I have painstakenly created a vehicle of terror and placed all of my worldly posessions in the middle. unfortunately more times than not one of my vehicles or its enabling devices end up in a womans restroom or hanging from a tree so it realy never pans out for me.

--Biff

PS. Keep your ride away from the pranksters.

I must ride with some Quality people , I've never worried about it ...

Drive a car like mine, not worth stealing......

 

Seems like a crappy place to keep your key  

I use a cheap camera case with belt loop and cable tie to the handle bars,  Great for my keys, fags and lighter.

 

 

Fatty

This what I just bought to keep my keys in while on the trail. It plugs into the hitch receiver on my truck.

I put a car key and house key on a special lanyard that goes around my neck. Drop the keys inside my jersey. 

I shove mine up under my 4WD somewhere, like hanging off a shackle grease nipple, exhaust mount bolt, under the bullbar, something like that.  That said, I highly doubt anyone would touch my vehicle at an event without a lot of people noticing.

I give the car key's to the wife