I didn't have a binder with RNY. I did with plastic surgery, but that obviously wasn't laproscopic - I had HUGE incisions with that.
things I used a lot: blender, kitchen scale, ramekins (although your measuring cups will work for this. I used my ramekins so I'd know how much I was eating. You can get them in different sizes like 4 oz, 8 oz, etc - but your measuring cups will work for this, too). A baby spoon (I still use one at five years out because I love it!). I also bought individual packets of various protein powders so I wouldn't waste money on huge tubs of powder that I ended up hating. Before surgery, I liked the chocolate and vanilla ones, but after surgery, I found those too sweet (at least for the first few weeks or months). I preferred the fruity ones after surgery - and/or savory ones, like chicken soup-flavored. So get a variety of flavors...