Cinder's 9wks old now, and the first time we bought her toys, we got her a stuffed monkey that was as big as her, and a couple of rawhide bones. She missed her siblings, and apparently wanted the monkey to be a substitute. She put a bone in front of the monkey, then bounded away, turned around and crouched, growled at the monkey, ran up and batted at the bone with her paws, barked, bit the monkey on the nose, pounced it, snatched the bone, and ran away. She'd play "keep away" with the bone while looking over her shoulder at the monkey for a while, then she'd give the monkey the bone back, rinse, repeat. Hilarious! She also grabs the monkey and shakes it until she falls over.
She's an avid tail chaser and will spin until she gets dizzy and falls over.
She likes to grab sticks that are three times as long as her in the middle and tote them around the yard, head and tail up and prancing.
She will also find a spot in the tall grass and roll around in it until she's made a nest and will hide there until we find her, peeking out at us and then scurrying back. Apparently, human children aren't the only ones who like building forts.