I don't see this as a challenge, when you are given a private key in a process of opening a wallet all you need to do is to keep it safe and secured, now there are many ways to keep your private key safe.
You can write down your private key on a book and then keep it in a place where you know no one can reach, a lot of people are using this method you can decide to write it in two different books and then keep it.
You can also use cold store by storing your private key on a device that is never connected to internet for example USB drive.
Some people will write down there private key on paper and then snap it with there phone back it up with there email or Google account and then delete the photo of the private key from there phones if maybe they are in need of it they will just restore it and the picture of the private key will show this is also a good way to save your private key, which ever way you want to use just make sure is good and your key is safe and won't get missing.
One thing I will like to add again is that don't connect your wallet to airdrop if you do then you have given hackers an opportunity to get access to your wallet.