I sometimes join sample challenges. There is one called https://stbbforever.com that I joined this week. If you make beats I would seriously recommend checking it out. It is the longest running and yet the chillest one out there, with a small group of seriously talented beatmakers. Here's this week's contributions.
https://soundcloud.com/stbbcollection/sets/stbb-863-homage-to-axelrod #beats #hiphop #stbbforever #samplechallenge #instrumentalhiphop