Also not a lawyer, but I would urge more caution - this is overly optimistic advice. A lot of employment contracts in the US claim ownership of all your IP prod

Also not a lawyer, but I would urge more caution - this is overly optimistic advice. A lot of employment contracts in the US claim ownership of all your IP produced on or off the clock, regardless of the equipment used. Whether or not that contractual language is "really legal" is another issue, but practically speaking it may not matter, if determining that means a costly legal battle against your employer.