For my wedding centerpieces I decided to make terrariums, then give them as gifts to the wedding party. It was relatively inexpensive to make and went great with our theme which was enchanted forest. Most of the cost was in the glass, all of the moss I collected from the forest. The mossy fern I found at the nursery and split up. Layer pea gravel, activated carbon, sphagnum moss, potting soil ( minus the vermiculite), and plants of your choosing. This can be done with succulents, just add sand to the potting soil and place in your sunniest spot. I found that it gets to wet in the terrarium for succulents and have had better luck with the "forest terrariums".