Hardware & software:
- Titanium Ridge Wallet at https://www.ridgewallet.com for $105 from Rene Ritchie.
- Itty.Bitty.Site at https://itty.bitty.site for free from Leo Laporte.
- Alex Lindsay Summer Playlist at https://open.spotify.com/user/121122533 for free (with Spotify account) from Alex Lindsay.
- Xero Shoes for various $ (on Amazon) from Andy Ihnatko.
- Notion.so Interview at https://www.notion.so/ for free from Leo Laporte.
You left out “Song Shift” app, for moving playlists between services, specifically used for Spotify to AppleMusic. Alex mentioned it. I use it for the same.