So, how about we create a really nice and simple GUI and promote the coin in major cities with some stands where people can buy black coins and them give them a USB with the wallet software on it.

If you create a cool stand on a market somewhere with some text like, do you remember when Bitcoin was 12 cents a piece, well now theres blackcoin. Then explain the network is energy efficient and no miners are required for this coin. Just let people buy blackcoins for $10 or €10 and give them the USB with it. This way you can get allot of new people involved i guess?