Amazon.com: ex pen - Home & Kitchen: Home & Garden
There's many options on amazon. I would still try to get someone over to take your baby out, or maybe take your baby to daycare a few days a week just so he remains social.
I wouldn't enjoy over 11 hours locked in my room, and I know Giz wouldn't either. I know it can be challenging with work schedules, but and expen as well as daycare will be big helps.