In Illustrator, CS5 is there any way to keep the tool options window open or viewable when using the blob brush/eraser tools? It's a pain in the butt when you havg to change the direction or shape of the brush tip with every stroke!
No, there's no way to keep the dialog box open. Both use a modal dialog, which passes its values back to Illustrator upon closing. Unfortunately, Adobe did not include modeless dialogs (palettes) for these tools in CS5.
You probably already know this, but the standard shortcut for opening a tool's dialog settings is the Enter button. I find that's the easiest way.