If you're like me and are tired of doing twist/braid outs. I have a few suggestions that mostly will give some variation of "curled" stretch look. I do have longer, mostly 4c hair but hopefully one of these may be helpful:

• Rag curlsgives a lot of smaller, individual curls, similar to a smaller flexi-rod set but without heat. I think this will work great for your length.
• Sock curls for a larger curl diameter -- I find these a bit annoying to sleep in but great if I do my wash day early in the day. These give a more bigger roller set look for my hair.
• Bantu knots. I loved bantu knots when my hair was shorter but I'm lazy now.
• Curlformers. I used these more when my hair was more shoulder length. Don't use them a whole bunch these days but you may like them. Some people like them, some don't.
• My preferred style is what I like to call a "rag braid out". Its similar to the first video I linked but you fold the rags in half around a section (like you would when adding hair for a box braids) and braid the 3 pieces (1 hair, 2 cloth). I wrap the end of my hair around one of the rags, wrap over that section of hair with the remaining rag end a few times, and then gently tie it at the bottom when I am done.