Basically anything in a good colorful workbook with enough space to write in....Thinking of Abeka, Horizons, certain BJU subjects...anything that doesn't need a cumbersome TM, or at least you can just highlight a few key sentences in the TM and go over it before they start (aka Abeka)...
For Science anything that is multi-child usable and not cumbersome..(thinking of Apologia elementary as being the one exception to the workbook thing) (although we pretty much unschooled Science till 6th grade)
High School- textbooks with outsourcing either online or co-op:
Good quality co-ops that cost money are worth it especially if they are well established
CurrClick has some good ones too and very affordable
Essentially in elementary, it was read-alouds, Story of the World, workbooks (Horizons, Saxon, Abeka, ACE, BJU) and unschooled Science (library, Bill Nye, Creation videos BBC nature stuff, Magic School Bus and fun Science kits from Science Wizard) and anything super messy and creative had to be a class (thinking of art, sculpture etc) or just done for fun on their own.
Then in middle school it was read-alouds and workbooks that actually got done. Middle schoolers were a tough lot for me, trying to teach independence, stick-to-it-iveness and perseverance with studies was hard, so having VERY CLEAR laid out expectations was absolutely crucial.
In high school my kids love me as a person and as a mom but they are SO DONE with me being the teacher, and that is why we outsourced. My calm, not dramatic respectful boy just got so beyond me that I function much better as a sounding board for amazing ideas than a teacher. My dd just doesn't want me teaching her and is struggling, as the baby of the family to have her independence as much as possible as I coddled her a little too much in certain respects, and therefore nwo that she has found she loves to be an independent hard working person, she no longer wants me as teacher. So, for high school basically everything is outsourced.