I have to put together a slide show for my Grandma's 90th. I'm doing it through my Macbook and the hall we are renting has a screen to project it on. But no projector. Are there places where i can rent a projector for a weekend? (that won't cost a lot) or are there other ways to do this? Like i said it will be on my Macbook and we have a screen but that's it.