My version, definitely too stuffy compared to Soren's
You don't really need much, just some brown paper (even a paper bag will do), items for coloring, either crayons, chalk, or markers, glue and any doo-dads like sequins, foam shapes or paper you have lying about.
First you'll need to draw or trace a bunny shape. I drew this one, but you could easily search for "bunny coloring pages" or clip art online to find one to trace.
Next, put some Elmer's glue on a plate or in a jar and give your child an old brush. Then let them paint glue on their rabbits, and add the embellishments.