Loads of stuff! I had a slow start but now I post:
giveaways for each 100 milestone - always generates followers
the weather and how I am feeling today
new fabric I've bought and work in progress
reviews from customers, especially quirky ones
links to my Etsy site
requests for advice and information - this not only helps me work out the latest Facebook changes, it generates comments and keeps me noticed.
Follow lots of other people, join the networking pages you come across, we have Craft a Thon, Hike Those Likes, Bob's Place etc, who share for a share, feature your new items etc. You have to play ball and like other's stuff, but I choose makers who are mostly in different fields to me, that way I think I might generate more sales. Once you have those likers, respond to them, like their pics and share the ones you really truly like. I try to be honest in everything, as I feel it gives me more credibility.
Oh, and the more Facebook friends you have, the more requests you will get for charity items - I've had to post something on my page about this in the last few days, as lots of people seem to think I can donate items I have spent time and money on. They don't know I am getting three or four requests a day! I give a few things to my favourite charities, but that's all I can afford right now.