My hubby got a mobile cctv from M1 for around $200+. You'll need to sign on for 1 year's new line at minimum $8/month. They have an add-on option for recording also. I didn't get that 1 tho.
It's useful coz can move around. Looks like a little helmet I check on my maid when i'm out via a videocall fr my phone.
I'm sure she knows it's a camera so it keeps her on her toes. She also can't tell when I'm checking so that's good.
Hope this helps!