This demand that people write tons and tons of code on our off hours is understandable but is getting, I dunno, obnoxious? If not tons , then perhaps something of very high quality. I could write a nifty little linked list implementation but would it really show that I'd be a good programmer for your particular needs? If you think it does, I predict having code written in off hours is a requirement will result in git…
I've been an Open Source contributor for more than a decade. I would say 90% of my open source contributions have been work where I'm extending or improving an Open Source project's code to suit a paying client's needs.