I have been working on open-source for ethereum ecosystem stuff since 2016. And while jolly-roger offer a specific set of tools, my contribution do not stop there. 
I have been building many project, themselves open-source of which anyone can get inspiration from. All of them available on my github profile: https://github.com/wighawag/
I have also contributed to several EIP, including ERC-1155 and ERC-2771
Any funding received will obviously help me continue toward more and more open-source work