My daughter is hippo crazy! So I came up with this cute pond for a hippo to lounge in, complete with grass near the shore. The only problem was when we lit the candles. The heat from the flames started to curl the grass and I was afraid we might catch it on fire, but all was well when the birthday girl blew out the candles! Good thing we sang extra fast. If you plan to use this idea, please be very careful with flames near plastic grass.