Get crafty with paper—try making modern paper cone trees like these fromMidwestLiving.
Or create a little 3-D paper magic with simple white card stock, like this tabletop forest featured in Better Homes and Gardens.
There are so many great centerpiece ideas that involve ornaments, and you likely have some extras laying around after trimming the tree. Here are a few simple ones that you can pull together easily and quickly.
Fill up some glass vases and bowls with ornaments like this display from V and Co.
Colorful ornaments under a cloche or cake dish cover, like these from Martha Stewart, make for instant holiday decor.
String together some ornaments using ribbon and run them down the middle of the table like in this tutorial by ediTORIal.
Lastly, some pretty ornaments sitting on a bed of simple greens, as seen in Better Homes and Gardens, make for a classy addition to your table.
Natural elements are also easily accessible, affordable, and make for great holiday centerpieces. Here are a few examples of a more rustic look.
Submerge some natural red and greens in large, water-filled vases for a modern rustic look, like these creations from 33 Shades of Green.
A grouping of herbs in matching containers you can find at a dollar store makes for a very simple but pretty and fragrant centerpiece, as featured on The Food Network.
A few holiday clementines, greens and pinecones you can collect in your own backyard, and simple pillar candles make for a lovely display, like this one fromMidwestLiving.
For a more modern spin on nature, gather up some pinecones and spray paint them in your favorite fresh holiday shades, like in this cheery tablescape from A Subtle Reverly.
Light up your table with vases or bowls full of delicate micro strands of light either on their own or with some other holiday decor elements you have laying around, like this example from Brookstone.