I took an old jam jar and used it to plant Sunflowers; a cup-turned-candle and to plant Cosmos; and an old candle jar (from Anthro, of course) to plant poppies. To note each type, I cut a blue paint swatch into rectangles, labeled them, and tied them onto each container with baker's twine (seriously- if you want everything you tie anywhere to look really, really adorable, I highly recommend having a spool of this stuff! I use it to tie all my notes to customers when I ship out orders- it's so charming!).
Now here's hoping the flowers wind up looking as nice as the containers they're in. Happy Spring!