Wow, I didn't realize this thread existed. About 5 years ago I realized that I was up to 45 states, but the 5 I was missing were quite spread out - HI, SC, ND, LA, and ID.
I got to ND in 2020, LA and ID on separate trips in 2021, and SC in 2022. That left me with the best for last - HI which I finally got to in 2023 when I visited Kauai and dayhiked 22+ miles to Kalalau Beach and back in the same day.
DW has also been to all 50, and DS16 has been at 49 states since 2022 but probably won't make it to HI anytime soon.
We collect magnets as souvenirs and couldn't resist buying a ND magnet that says "I saved the best for last!"