Go/Geth project ideas for learning

Hi there 👋

I am learning blockchain development using go and geth. I was wondering if I could get suggestions from you all on simple projects that could be built for learning purposes.

Note: for now, i am not learning solidity so I won't be developing my own smart contracts, so only looking for ideas on cool projects that can be build based on being able to interact with the blockchain in go via geth.

Thanks 🙂