Another great theme for storytime is Hide and Seek. It's amazing how many picture books there are about looking for something that's lost; it was hard to choose! These were the books I decided on:
Where's Spot?, by Eric Hill. A lift-the-flap book. The big book version is especially nice for large groups.
Where's My Darling Daughter?, by Mij Kelly, illustrated by Katharine McEwen. A new picture book about a silly daddy who searches his farm high and low for his daughter, who is riding piggyback the whole time.
Little White Dog, by Laura Godwin, illustrated by Dan Yaccarino. The flat-color illustrations make this book. Little White Dog blends perfectly into the snow, Little Blue Bird into the sky, etc. Nonetheless, children can still make out the animals by using clues: eyes, feet, wings, and so on. A fun take on camouflage.
You can also sing "Where Is Thumbkin?" and do my favorite fingerplay:
Here is the beehive, but where are the bees? [make a fist, with your thumb tucked inside]
Hidden inside where no one can see.
Watch them now come out of the hive.
Five bees: one-two-three-four-five! [unfurl your fingers, one by one]
Fly away bees! BZZZZZ! [fly your fingers around]