A good plan for mini spy camera?

[Leighgeary]

That's good night, looking for a type of mini spy camera no bigger than a cigarette lighter, and who would walk in WIFI

Of course not too expensive, but I can pay the price: hap: The most perverse of you will think that this is the "hidden camera in bed room" and they have reasons

I've searched but most site FR offers too showy camera, and the US site is the same product with the postage and more

Thank you for your help