If you are doing scrapbooking or crafts with glue, you always need something to protect the tabletop. When applying glue right up to the edges you will need to get a new surface for every object (i.e. preparing letters to glue on scrapbooking items) to avoid getting glue where you don't want it.
I found an old magazine or catalog works great for this. I can turn a new page for every piece I am gluing, then throw it in the recycling bin when done!