Honestly, I've tested a ton of these over the years and you really cant go wrong with either for the 8a. Since that phone only pulls about 18W max anyway, both units are technically overkill, which actually helps keep temps down during use. In my experience with GaN tech, the Anker 511 Nano 3 30W Charger is better for your trip because it's tiny and hasn't ever overheated on me. If you're stressed about safety, the Google 30W USB-C Power Adapter is the official route but it's bulkier and usually pricier. You could also look at the Samsung 25W USB-C Wall Charger as a solid alternative that fits your budget perfectly. Tbh, just grab the Anker. It supports the PPS protocol the Pixel needs to charge efficiently. It's been my go-to for my travel kit for months now and works like a charm.

@Reply #2 - good point! Heat is definitely something to watch out for especially with those super tiny adapters. If you want something that balances safety and price without getting as hot as the Nano, I have a few suggestions that fit your $25 budget and usually ship fast. Since the Pixel 8a only pulls about 18W anyway, you dont actually need a massive 30W or 45W brick. Getting something slightly larger than the Nano 3 usually means better heat dissipation because there is more surface area. Here are some solid options I have used that stay pretty cool:

• UGREEN Nexode 30W GaN II Wall Charger
• This is my go-to. It uses GaN II tech which is efficient and stays much cooler than the first-gen stuff. Usually runs about $16-19.
• Spigen ArcStation Pro 27W USB-C Charger
• Spigen makes really reliable gear. This one is specifically designed to handle heat well and it is super stable for long-term use.
• Belkin BoostCharge 25W USB-C PD 3.0 Wall Charger
• If you are worried about safety, Belkin is basically the safest third-party brand. They have huge insurance policies on their gear which shows they trust their tech. I would probably grab the UGREEN one if you are ordering from Amazon today. It should definitely make it by Friday. Just make sure you use the cable that came in your Pixel box... cheap cables cause more overheating issues than the actual chargers do most of the time. Have a good trip!

Unfortunately I've had issues with these tiny chargers getting way too hot lately. It's just not as good as expected when brands sacrifice cooling for size. For your trip, I'd grab the Samsung 25W Wall Charger EP-TA800 instead. It's super reliable and stays cool. Just make sure you have a good cable. PPS charging is picky and a cheap wire wont let you fast charge properly.