I've been taking care of many open source libraries written in Ruby for a number of years.

By funding my work, you'll be funding the continuous development of core ruby libraries that need love. You'll fund the development of core utilities shipped with ruby like its dependency managers, bundler and rubygems, a widely used debugger, byebug, and other tools higher level tools such as Active Admin.

In general, whenever a widely ruby library is in need of help, and I find out about it, I try to step in and help out. By sponsoring me, you show appreciation for that and encourage me to keep doing it.