Help please Merve!

Merve, following on from your posts about the camera you installed in the bird box, can you give me some advice as to the best one I can get for my husband for Christmas please?   I have looked on the website you recommended (Handikam?)  but there are so many options, that I don't really know where to start.  I noticed that some of the cameras are already included in a bird box, is it better to get one of those or just buy a camera to install in an existing box?  Thanks Merve!