As long as fresh flowers still are rather expensive you can make your ambiance easily cheerful with paint coated beans in jars ;-))
If you don’t like beans very much, you can better fill the jars with coloured salt.
Bon appétit ;-))
Links:
Paint Coated Beans (Frugal Friday – Spray Painted Beans)
via: spray paint beans for an inexpensive vase or jar filler
Here at unikatissima:
Coloured Sand Jars