Try Craigslist/Facebook market listings in your area. They'll probably charge a premium but if you can't wait and it doesn't bother you that you can't return or exchange them than that's an option. Not sure whether Craigslist is still a go to site for things like this. In Canada, it isn't used much. Kijiji is much more popular up here.
Delivery might be tough. You could hedge your bet at Amazon, B&H, Apple, Best Buy ( no longer taking orders ) and cancel when one ships.
Otherwise you could stalk the Apple pickup page after 12:00 AM when inventory is updated. I checked for a few days but my local area showed out of stock, however one store briefly popped up availability around 2:00 AM and I was able to reserve in store. By 8:00 AM it was sold out again in my immediate area.
Keep checking the Apple site. Earlier this week, Apple said it wouldn't be able to deliver until late April early May. Local stores showed a long wait as well. I checked again earlier this afternoon, and my local store have the wireless charging option in stock. Drove to the store and in less than 10 minutes I walked out with the new Airpods.
I had to order mine from T-mobile they have both the AirPods 2 and the wireless charging case both in stock as separate items the AirPods 2 with the wireless charge ing case has one unit is out of stock.
I got the AirPods 2 next day. I didn’t order overnight on the case