I have forked Litecoin version 0.8.7.4 and created an altcoin. I run it in two node and started mining first blocks. I mined 30 blocks, but now I'm curious about what is holding my coin which reward for creating blocks.
I am not sure I understand your question correctly, but I would say:
You have created coins on your newly created blockchain which (hopefully) belong to you.
If you did nothing but that, then this is as valuable as if you designed any new fiat currency notes in Photoshop and printed them yourself.
They will only be of any value as soon as you will make other people wanting to use them.