Repurpose old maps
Maps have become pretty much obsolete in this day and age where every phone or watch has a GPS. Do not let your old roadmaps go to waste. Pick some of your favorites and use them to customize some globe-trotter-themed coasters. They will inject color and personality onto any table.
You will need tiles and mod podge for this. First, cut the map into large squares that fit on top of the tiles. Cover the surface in mod podge and carefully stick the squares on. Paint some more mod podge on top to seal everything in.