i keep mine on a usb thumb drive in a vault, my coins are safe for ever

same thing, it's easy and convenient, no need fancy thing to secure your bitcoin, you only need to be vigilant above all things, secure does not matter if who is behind security don't know what he is doing

I put my private seed in 2 or 3 memory sticks and have 1 memory stick from those 2 in my locker.

i think it is best to keep it in multiple forms like storing it on paper and offline pc. and i am looking into it.

but so far i am only keeping it in my cold storage, in an offline wallet only.

I usually store my private keys in multiple places. For me, I wrote it a few times on a piece of paper, store it in a few flash drives, and additional backup is one CD-ROM per private key. Well, I mostly wrote it on a piece of paper.

I put in a lot of places.
printed out, i compress and encryption doc file using winrar, put rar file into micro sd and put micro sd in a safe place. 

I have a friend with a 3D printer and we developed some small items where the two pieces fit together and half of the private key is printed on the one side and the other part on the other. You then

store these two pieces in two separate locations and nobody will even know what it is. His 3D printer is unfortunately broken now, but we worked on a project to print Bitcoin addresses on one side and

private keys on the other.. like a pendant. I thought that was a pretty good idea... but there are trust issues, we have yet to solve with this idea. 

I keep it printed and on an SD card

Cold walet just 2x printed paper wallet in different locations.
Hot wallet although it is encrypted, I rar it with strong password so no one can see transaction history and upload it to my second computer and to my email + cloud storage.

paper wallet everytime with a copy on a usb stored in a safe,