SyZyGy Loc: Temple, NH

Yes, but use aluminum foil instead of a sheet of paper to make your pinhole in. Aluminum foil isn't translucent - and it makes for a crisper pinhole.
A "camera obscura" such as this is a nice way to watch the Moon cross the face of the Sun - and one could take interval photos of the screen too - for those who will not be in the path of total eclipse. BUT -

I avoid the screen and such IF I am in the path of totality - since even looking at the bright image on the screen reduces visual sensitivity to the spectacle during totality. I like dusk-adapted vision for that.
The screen is great AFTER totality though.