A culture tube is a test tube without a lip. Volumetric Flasks . Volumetric flasks are used in analytical chemistry to produce accurate solutions. However, they can be used as decorative glassware around the home for holding salad dressings, etc. Stoppers are included.
Watch glasses have all kinds of uses.
A watchglass is also very handy for making ice lenses. Fill one with water, freeze it and then repeat. Unless it was in the freezer, assume it is hot. Borosilicate glass will withstand a fair degree of thermal shock but unless your intent is to see if you can make it crack, don't toss recently heated glass into a cold water bath. When borosilicate glass breaks, it makes sharp edges like any other kind of glass.