iCloud Private Relay
I subscribed to iCloud+ on my iPhone (for $1/month with a gift card, i.e., without a credit card) because it offers much better battery life than a classic VPN. I always had problems with battery life using the official WireGuard client or Tor onion routing. I also installed the Safari plugins Sponsorblock and uBlock Origin Lite. This allows me to watch YouTube videos without ads on the train, meaning that not only are ads from YouTube filtered out, but also those from the content creator. This is made possible by a crowdsourced filter list with timestamps indicating where ads begin and end in the video.