I start to be a huge fan of Starknet. For those who do not know yet, it is a ZK (Zero Knowledge proof) rollup built on top of Ethereum mainnet. As they have not launched their token yet, an airdrop is likely, and hence it might be worth using their apps. One of these apps is Mintsquare, and you can use it on your smartphone by downloading Braavos Wallet. 

You can proceed by following the steps below:

1) Download Braavos wallet

2) Create an account on Braavos Wallet

3) Register your free subdomain as follows:

1. Open your Braavos wallet

2. Go to Account Settings

3. Click on “Register braavos.stark subdomain”

4. Choose your desired subdomain name, i.e.: “yourname.braavos.stark”

5. Click on "Register" 

Once you have registered, you may leave your subdomain name “yourname.braavos.stark” in the comments below. I will randomly select one subdomain name and send the NFT corresponding to the image above... So that you can see the complete picture!