Plant grass seeds and water gently. Water lightly every few days if soil dries. In about 2-3 weeks it will ready. Cover your work area with plastic. This is a messy project.
Kids can help with supervision.
Paint the bunny form purple or add paint to glue in a disposable container, like yogurt. Spread glue over a section of the bunny and press lavender buds into the glue. Move to another section and cover with tacky glue and press lavender buds into glue. Continue spreading glue and pressing more lavender in new sections. When the bunny is covered, allow to dry.