Piñatas are filled with candy, and who loves candy more than kids?! This technicolor setup includes macarons, cookies-on-a-stick decorated with colorful candies, and of course, a giant piñata for busting open.

For this Alice In Wonderland-themed soirée, take decorating cues from this clever cake. Craft a door wreath by gluing a deck of cards around a cardboard circle; create "keyhole" cornhole for a fun activity outdoors; and of course, the lady of honor should dress in her Alice best. DIY snack stands by flipping a vintage tea cup upside down, then hot glue a saucer on top (so cute!).

An ice cream-themed gathering is perfect for summer, but you can pull this theme off any time of year. Decorate with candy-colored decorations and set up a build-your-own sundae bar with all the toppings. And come on—how adorable is this cone-crowned cake?!

Is the little lady in your life obsessed with slime? (Aren't all kids?) Celebrate her big day with a party that'll have her (and her guests!) oozing smiles. The big event, of course, is making the slime, so prepare a slime favor box for each guest with everything they'll need.

SHOP SLIME FAVOR BOX

Whodunnit? Assign a parent or sibling the role of the cake thief and let the party-goers crack The Case of the Missing Cake. (Because cake is what we're here for, right?) Tie up napkins with magnifying glasses collected at flea markets or purchased in bulk online. Gold decorations (balloons, napkins, icing, the birthday girl's outfit) echo the infamous book cover hue of the classic series.

SHOP NANCY DREW BOOKS

Celebrate your leading lady with a backyard movie night! Whether it's the main event or part of a birthday slumber party, kids—especially the pre-teen crowd—will love the chance to break away from the grownups and catch best funny kids movies outdoors.

To create your home theater, you'll need a blank wall or sheet and a portable projector (you'll hook it up to your laptop or another device). Set up comfy seating and a "concession stand" offering classic theater fare, like popcorn, nachos, and boxed candies.

SHOP POPCORN CONTAINERS

With a cake as colorful and happy as this one (that fondant bow!), all the other party planning will easily fall into place. Practically any color of plates, napkins, and balloons will work. Pick her favorite color, and remember—sprinkles make everything better!

SHOP SCALLOPED CAKE STANDS

Little girls love to be pampered! Instead of carting the kiddos to the salon, bring the salon experience to them. Greet guests with matching robes and headbands that they can take home as party favors. Wrangle a friend or two to come help you with manis/pedis while the kiddos relax with face masks (don't forget the cucumber eye patches).

SHOP SPA KITS

Toot your little one's horn with a magical unicorn-themed birthday party she won't soon forget. For decorations, go with a simple pastel or rainbow color palette and this unicorn cake topper. Rely on a few statement-making elements, like the cake and cupcakes seen here, for some truly Instagram-worthy moments.

SHOP UNICORN CAKE TOPPERS

Pick a party theme with a purpose, like this elementary-aged girl did. Instead of gifts, friends brought new or gently used childrens' books to donate to a local charity that helps under-privileged communities get books in the backpacks of kids who need them most.

Ahoy, matey! Princesses can be pirates too—all it takes is a pastel palette, like the pink and purple shown here. Buy bandannas in bulk and tie on their heads as they hunt for treasure either inside or out, depending on weather. Hide trinkets, jewelry, and chocolate gold coins that they can add to mini treasure boxes as they discover their loot.

SHOP TREASURE CHESTS