How can I effectively use vases as planters for my indoor plants?

To effectively use vases as planters for indoor plants, make sure the vase has drainage holes or add a layer of rocks at the bottom for drainage. Use a well-draining potting mix and choose plants that are suitable for the size of the vase and the amount of light in your space. Water the plants carefully to avoid overwatering, and consider using a saucer underneath to catch excess water.