Sorry for an off-top, I think there are some TON users on CF, who may find it interesting. At least, if right now you look at the upper part of your screen, you will see Codeforces logo, looking like this:

Wallet

So, I made a cold TON wallet, which I use myself. The point is, your mnemonic phrase is created and used on a completely offline device, and you don't need to buy a hardware wallet.

Read extensive description and comparison with other options on github

Address Generator

Additional part of the project is the generator of personalized addresses to use, you can find it's repo under same github organization.

This is a real TON address I was able to obtain with it:

UQCODEForceSrB20zRxCynMFapvczWr4Z8YxsZ_9omI6jeEZ, explorer

And to prove this address is usable, I'm showing you it's mnemonic phrase and wallet-id:

rug lecture ethics genuine 
dumb raw ozone lake 
usage law fee fantasy 
suffer congress shuffle harbor 
genius route industry castle 
lucky genius empty enforce 

Wallet ID: 2453454666

Read about using TON address with Wallet ID in address generator readme

So, small bonus stored on this address is now yours, CF

One more address — UQCODEFOrCesjR18nwwcjxekUkDFHVMf0IvnBr7ugY1RYwKz, which one looks better?