You can do as small as fractions of Hive. 1 Hive is around 111 sats. I'm not sure what's the minimum deposit on Coinbase on Lightning network.

But Sats are Bitcoin, sats stand for Satoshis. 0.0001 is 10,000 sats but it's the same network.
Here is a convertor.
You can send it to a Coinbase wallet through the Lightning network. Just create the invoice and put it on V4V.