What's the best product for this?

1. Neighbor kid does a chore for you.
2. You want to pay them in USDC. 
3. They only have an Apple Watch.

the "only an apple watch" requirement is what makes this so hard. if they have an ipad or a device to manage a full wallet from, I don't think it would be difficult to build an app that surfaces their payment address or even a tap-to-pay experience on the apple watch independently

still mostly analog. patterns, builder, entrepreneur, analyzing your transactions since 2016

now.. how would they spend it? could have the watch app sign an offline message and pass the data over nfc to your device. really bad ux, but it could be done. i don't know the capabilities allowed on an apple watch for an app like this.