In the past few months, we have covered plenty of tiny Apple Watch and iPhone chargers here. The Maco Go 2 is also worth a look. It is one of the smallest Apple Watch chargers on the market. It is tiny enough to fit in your pocket and supports fast charging for Apple Watch 6, 7, 8, and Ultra.
This fast charger is also compatible with AirPods Pro 2nd Gen. It has a USB-C connector placed strategically not to block other ports. It is MFi certified. The device measures 1.38 x 1.38″. You can find out more about it here.