As a child, I was under the impression that working with test tubes would be a bigger part of my adult life. Not only because I wanted to be astronaut/scientist, but I guess I just always pictured myself performing experience of some kind. If you happen to be in that boat, here's a fun way to do something useful with those unused test tubes, or if you missed that boat of impracticality, here's a potentially masculine way to display some single flowers.
Heads up, cool kids: Math is way hip. Particularly, geometry, facets, and gem shapes have been everywhere designy for the last two years, and there's no reason the holidays shouldn't be included in the trend.
Case in point: this geometric garland. It looks nice and handmade, is holiday-neutral, and the colors are winter-y enough that you could leave it up through February.