As far as I’m aware WS is pretty close to what you get by just using virtalbox (with an easier setup) so you could do that on Linux. With Linux you also have more advanced solutions though like https://en.wikipedia.org/wiki/Qubes_OS

• You might need to buy additional food
• Wear and tear of work attire
• Might need to pay extra for someone to watch pet/child

Also there are additional costs of time

• Extra time shaving or similar (if you know you are staying home some things can be delayed a bit)
• Possibly extra time to prepare food
• Traffic/weather delays
• Extra effort for small things easily manage while at home e.g accepting deliveries, watching pets or opening for maintenance workers

That’s of the top of my head, so 1 hour lost per day is a low estimate.