Don't try and hide that Leksvik table from me, I can recognise Swedish wood from a hundred miles away. We all own Ikea furniture, it's as certain as death and taxes. But not everyone makes a projector from a lamp.
Instructables member Derte84 cobbled together his projector using just the Isbrytare lamp from Ikea, tape and a couple of photo slides. Very simple, as you can tell. This particular model of lamp has a lens, which is necessary to make the image beam onto a wall, and is what Derte84 attached the photo slide to - though not too close to the light, as otherwise it'd burn.
Then, you can bore friends and family to death with holiday photos the old fashioned way - in Sweden, at least. [Instructables]