I think the pressing bars will do for most of my needs. I imagine that the bodkin and straw would be to turn things like vines. The bars are made for that and don't need to be turned right side out.
Hmmm... that made me think of something. If the bias strips are sewn right sides out and ironed with the bars, I could put a very thin strip of fusible down the back side of them, iron them on, and the top layer wouldn't be "stuck" to the background. It would hold them in place while doing the hand stitching with no pins. Come to think of it, I could do the same with other pieces. Cut very thin stips of the interfacing, even just little dots with a hole punch, and stick them to the turned under seam allowance of a piece. Peel off the paper, iron them in place, then hand sew them on.
I'll try it.