Oh man, I wasn't aware of the Winter Wren split. Darnit. I am missing Canyon too.
Canyon is easy, just learn its call. And the best thing about Canyon Wrens is they live near cool herps.
I was herping in SoCal in March and I heard a Canyon Wren calling. I called back (it is a really easy call to mimic) and it flew right over to me. It landed so close, I had to back up to get my camera to focus. It was pissed!
I did finish off the native/breeding Orioles this year!
I always like finishing a group of birds. I used to joke with a birder friend that I could tear that page out of my field guide.
It is even more fun if you can get them all in a given day/week/year.
I came very close to finishing all 7 north american grebes in two days a few years back. I had been in West Texas and seen Pied-billed, Eared, Horned, Clark's, and Western one morning. When I got home to Central Texas that night, I heard about a Red-necked Grebe in Austin so I sprinted over to get that the next day. Then I realized it would be a relatively short drive to get Least that afternoon, but I didn't have time.

Maybe next time and since Red-necked Grebes only show up in TX every 4-5 years next time might be a while.
Actually, that same week someone found a Yellow-billed Loon off of South Padre island. I had just seen Red-necked and Common in West TX, Pacific is predictable in certain places around here, so I could have got all 7 grebes and the 4 loons in less than 36 hours (ignoring Arctic Loon)!