There are some very nice contests at the RSI forums at the moment.
So I made a small compilation for everyone to check out:
Avenger LTI: https://forums.robertsspaceindustries.com/discussion/110155/contest-win-an-avenger-lti/p1
300i LTI: https://forums.robertsspaceindustries.com/discussion/129041/contest-win-a-300i-lti/p1
Super Hornet LTI https://forums.robertsspaceindustries.com/discussion/126257/contest-the-next-great-quest-lti-super-hornet-prize/p1
Aurora: https://forums.robertsspaceindustries.com/discussion/111109/contest-win-an-aurora/p1
Aurora Game Pack: https://forums.robertsspaceindustries.com/discussion/129846/contest-get-started-in-star-citizen-win-an-aurora-mr-game-package/p1
Posters: https://forums.robertsspaceindustries.com/discussion/128479/contest-the-first-annual-exotechnology-race#latest