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Who to solicit for a small project?
(lemdro.id)
This is a most excellent place for technology news and articles.
It's not really meant for soliciting, but Tindie is the closest thing I can think of what you're looking for. https://www.tindie.com/ You could find something in the same ballpark of what you're looking for and contact the person who made it and ask if they would be interested in doing custom projects.