The DCC RPG Free RPG Day 2017 Quick Start (paid link) is brilliant.
Apart from featuring one of my all-time favorite covers, by Doug Kovacs, it includes everything you need to make peasants for a funnel; a fabulous funnel, The Portal Under the Stars; levels 1-3 for all of the classes; and a slightly stripped-down rule set that means you can fit all this plus the rules the GM needs to run it in one 48-page booklet.
But! But. Why have rules for 1-3 and only a 0-level funnel? Because that’s not all: It also includes a new 1st level module, Gnole House, by Michael Curtis. So your newly minted crawlers will have plenty to do.
The only thing that could make this better is if it was free. Oh wait, it is free!. (Post-2017 update: It was free on Free RPG Day 2017, now it’s $2. Still worth it!)
The Quick Start is a master class in how to design, package, and present a deeply satisfying and highly functional introduction to an RPG. I can drop this in my bag for a con and be able to run DCC at the drop of a hat. If it gets someone jazzed about the game, I can give it to them. Splendid.
I also want to give a hat tip to Noble Knights Games, my FOLGS, for their one-cent promo program: For every $15 you spend, you can add a one-cent item to your order. That category includes Free RPG Day items, making it my favorite way to acquire them.