⭐ Merited by LoyceV (4)
In my experience, those requirements don't work well together. I've spent a lot of time creating and signing a transaction offline, and ran into several problems (wrong version of Electrum and later a fee of less than 1 sat/byte). It took a while to get it all right, and considering how little I do this, I already forgot which Live CD eventually worked.
I've done that successfully for a short while before moving to the convenience of a proper HW.
After writing the latest Tails OS onto the USB stick it's all good, no need to look for "what was the CD"? Or at least for me that was it all.
I do have spare netbooks though, but they're old (1GB) and slow, and I never set them up for offline usage.
and here comes the difference. While I do have plenty of spare USB sticks, I literally have no old laptop for this. My oldest laptop (12 years old) got a RAM update and was used lately by my kids even for online school.(until they enter their seed words on a phishing site).
LOL!
Those who don't read the very basics do deserve their fate though...
Until they come with their own data connection. Prepaid data isn't that expensive anymore, and could be worth it in a targeted attack. People have already been sent fake hardware wallets by post.
I've read about the fake ledgers on bitcointalk. I don't think though that general purpose development devices like this worth such an attack, since the vast majority will not be used as HW.
It's fun as hobby, but creating your own Jade (Blockstream's hardware wallet) is more practical. Jade also use similar hardware (on price and physical size), but the source code available for free and thoughtfully tested.
Imho the more the variety to choose from, the better. I expect Jade be less easy to buy than this M5StickV in some countries.