DIY VINTAGE GLASSWARE ... used Elmer's Glue poured into a cup and then added small amounts of Wilton's Food Coloring until I liked the color Then I used a soft paint brush . after it dries it really dries transparent. You don't need a sealer. If you do it for a vase you still need to paint the outside because it is not water proof. What kind of Elmer's Glue did you use? White Glue-All
Have some foreign coins left over from a trip. Put them to use as magnets. Buy some button magnets and attach them to the coins with E-6000 glue. You have some cute magnets as well as a useful remembrance of your trip!