1. Superhero Party:

Let the kids come dressed as their favorite superheroes, and decorate the venue with superhero symbols and colors. Hire a costumed super hero or have a friend dress up for added entertainment! 

2. Princess or Prince Party:

Transform the party space into a royal kingdom with crowns, wands, and royal decorations.

 
3. Dinosaur Adventure:

Create a prehistoric atmosphere with dinosaur decorations, and consider a dinosaur-shaped cake or cupcakes.  Look into letting guests do dig kits or finding treasures in a sand box! 

4. Under the Sea:

Dive into an oceanic adventure with mermaids, pirates, and sea creature decorations. This is a fun theme for pool parties.

5. Space Explorer:

Blast off into space with rocket ship decorations, astronaut costumes, and galaxy-themed treats.

6. Carnival or Circus:

Set up carnival games, popcorn machines, and colorful decorations for a fun and festive atmosphere.

7. Safari Expedition:

Transform the party area into a jungle, complete with animal decorations, and consider a safari-themed scavenger hunt.

8. Unicorn Wonderland:

Embrace the magical world of unicorns with pastel colors, unicorn decorations, and perhaps a unicorn cake.

9. Spa Party:

Plan a spa day at home! Let guests know to come in their PJs and be prepared to be pampered. Offer different spa style stations and have a friend man the station. Ideas are mani / pedi station, face mask station and even a waiting area! 

10. Pirate Treasure Hunt:

Create a treasure map and set up a scavenger hunt for hidden treasures, with pirate-themed decorations.

11. Construction Zone:

Use caution tape, construction signs, and hard hats to create a construction-themed party for little builders.

12. Farmyard Fun:

Turn the party space into a mini-farm with barnyard decorations, hay bales, and farm animal balloons. Consider hiring a Travelling Zoo to bring animals to your venue! 

13. Sports Extravaganza:

Celebrate a love for sports by incorporating various sports themes, like soccer, basketball, or baseball.

14. Wizardry and Magic:

Host a magical party with wizard hats, wands, and enchanted decorations for a spellbinding experience.  Do some science "spells" by mixing baking soda with different herbs and spices and adding vinegar! 

15. Jungle Safari:

Go on a wild adventure with jungle-themed decorations, animal prints, and jungle explorer costumes.

16. Rainbow Delight:

Celebrate with all the colors of the rainbow through decorations, rainbow-themed treats, and colorful party favors.

17. Garden Tea Party:

Create an elegant tea party with floral decorations, tea sets, and dainty treats for a delightful experience.

18. Wild West:

Transform the venue into a western town with cowboy hats, bandanas, and hay bale seating

19. Super Mario Bros.:

Bring the beloved video game to life with Mario, Luigi, and Princess Peach decorations, and perhaps a Mario-themed cake.

20. Ice Cream Sundae Bar:

Make the party sweet with an ice cream sundae bar, where kids can create their own delicious treats with various toppings

Remember to tailor the theme to the birthday child's interests and preferences for a truly special celebration!