I've been playing Blockland on and off for years now and after I come back from a break, I never know which add-ons are the cool new things. RTB used to help with that, but since it has gone away, I have no idea what I'm missing. So I wanna know, what are your top 10 favorite add-ons? It'd be nice if you'd include a sentence or two on why you like using each one and a link to download. Bonus points if you post your favorite color set!