Digital Timeline?

We’ve been doing a Book of Centuries for a while.  I was wondering if anyone is using something digital instead of paper.  I would love to add in book covers and other tidbits to our record, but then it looks crowded or we have to add in extra pages which throws stuff off.  Call me OCD but I want it all in exactly the right order!  I want to be able to move this over here when we learn about that, even if we studied it in the wrong order and we glued it down.  The product from Knowledge Quest isn’t Mac friendly…any other ideas?  Or do I just need to take some deep breaths and not worry about messy looking BoCs?