Yes, but a projector needs electricity and cooling, and of course the slider/film spools.
However, there are slide projectors where the casing can be flipped open and the cooling vents/ribs are located inside as the slider. If even the electrical connector would be located inside the casing then in its basic design it would like this thing, though the proportions would be different and they all have a symmetrical front.
And in this case it does not seem there is an easy to open casing.
A projector would have a focusing lens. Also something the OP has not unveiled yet.