On the holiday of Shavuot, which celebrates the giving of the Torah, it is customary to decorate our homes and synagogues with fruit, flowers and greens. Mount Sinai was in the desert, but when the Torah was given the mountain bloomed and became covered in grass, flowers, and trees. Shavuot is also a harvest festival which coincides with harvesting the annual crop of wheat.
Sure, you can grab a bouquet of flowers and stick them in a vase with water, but here is some inspiration I found on Pinterest to take it one step further in honor of the holiday.
Hydrangeas are all over the garden centers right now. Cover the pots with pretty fabric and after the holiday, you have new plants for your garden.