My wife called me and told me the rear handle broke on her 2002 Sienna. Before she got home I found a replacement metal handle on ebay for $33.90 from johnnyutah14 and it arrived in a couple of days. Everyone's notes were helpful. The handle and strap were easy to remove, with three bolts total. Either 10mm socket with a small extension or a large phillips screwdriver will work. The back cover was off in about a minute. The cable was very easy to locate, just look opposite of where the handle is. I traced the cable down pulled on the catch, the rear gate opened. The cable from the handle to the latch is easily removed, just like a bike brake cable. There are two nuts holding the handle, and one nut on the passenger side holding the light/handle/lock assembly. Also a small white plastic tab on the driver's side. I used needle nose pliers to gently squeeze and push the white tab. Everything moved out easily. With everything sitting on top of the open door, it was quick to remove two small screws and the old handle. Put everything back in reverse order. I found the handle was a bit larger than the old one, so I had to angle it different ways until it went in the opening. The spring on the new handle is stiffer than the old one, so I took it all apart again just to make sure there wasn't something binding. All is well. My wife is delighted. Life is good.
Thanks for all the advice. If anyone is concerned, don't be, go ahead and try this. You will feel good, save some money, and only takes about 20 minutes (less if you don't do it twice like I did).