I don't give them plastic straws, but that's only because they pull them apart so quickly that there goes another toy in seconds flat. I prefer toys that take them awhile to work their ways through for the most part. I do give them sheets of blank cardboard to rip up daily.
My greys LOVE stainless steel toys. They especially love the three bells swinging perch. Mine will grab onto the bars to pull the swing as close as they can to the bars and then they let go so they can swing back and forth while ringing the bells. All three of mine do this! Frankly I think Maalik taught the others how to perfect this fun maneuver.