Most device (whether it's server, computer or even smartphone) can run Bitcoin LN.
The device must reach the quorum of deposit which is 25 dollars and then automatically send it to your wallet!!
Because the activity of the devices is in the form of transaction confirmation, it does not consume much electricity and you can easily turn it on at home. They work without sound and heat!!
The calculation isn't realistic, since you don't consider TX fee to open and close LN channel.
1- Two channels: every 12 days there is a deposit of 25 dollars. (income is 60 dollars per month)
- Currencies that output:
BTC ETH LTC DOGE MATIC TRX DOT LINK
2- Four channels: every 7 days there is a deposit of 25 dollars. (monthly income of 100 dollars)
- Currencies that output:
BTC ETH LTC DOGE MATIC TRX
3- Six channels: every 9 days there is a deposit of 100 dollars (income of 300 dollars per month)
- Currencies that output:
BTC ETH LTC SOL XRP DOT AVAX DOGE TRX MATIC
The income of the device is fixed in dollars
Now it sounds shady. Some of those coin/token doesn't support LN, while getting fixed income is dollars is impossible when you get routing fee based on routed coin.