An under the sea theme for your birthday party in NZ is a great way to delight your child, and our Party Box has all the supplies you need to make your little ones feel like they’re exploring beneath the waves. This box includes tableware, centrepieces, and balloon supplies for an unforgettable underwater celebration. If you’re looking for supplies for a themed party, whether it’s a child’s birthday, a Christmas celebration, or another holiday entirely, you’ll find everything you need at My Party Box. Feel free to contact us at 021-1819990 if you’d like any advice on planning your dream celebration. 
Tableware and Centrepiece Package
Our tableware and centrepiece package contains the following party supplies, which are perfect if you have an under the sea theme for your birthday party in NZ:- 1 x (8pk) Seashell Plate
- 1 x(16pk) Under The Sea Fish Napkins
- 1 x (24pk) Pastel Blue Plastic Cutlery
- 1 x (4pk) Shark Platters
- 1 x (10pk) Classic Metallic Silver Paper Cup
- 1 x Shark Shaped Foil Balloon
- 25 x 12cm Crystal Latex Clear Balloon
- 1 x (15g) Blue Confetti
- 1 x Plastic Rectangular Tablecover Frosty White
- 1 x Balloon Pump
- 1 x (25M) Balloon String
- 5 x 3M Ceiling Hanging Clicks
- 10 x Balloon Hanging Clicks
Balloon Garland Package
Our balloon garland is a great way to transform your living room with an under the sea theme for a birthday party in NZ! This package contains:- 1 x (100) Balloon Glue Dot
- 1 x (25m) Balloon String
- 1 x Balloon Pump
- 1 x 45cm Fashion Blue Latex Balloon
- 15 x 30cm Fashion Blue Latex Balloon
- 15 x 12cm Fashion Blue Latex Balloon
- 1 x 45cm Pastel Matte Blue Latex Balloon
- 15 x 30cm Pastel Matte Blue Latex Balloon
- 15 x 12cm Pastel Matte Blue Latex Balloon
- 1 x 45cm Standard White Latex Balloon
- 15 x 30cm Standard White Latex Balloon
- 15 x 12cm Standard White Latex Balloon
- 1 x Under The Sea Garland
Helium Free Indoor Options
If you’re planning to host your party indoors, we have an economic, helium-free option for setting up your balloons and bringing the under the sea theme for your birthday party in NZ to life. With our 3M ceiling hooks and Clik Hangs, you can save the cost and trouble of filling your balloons with helium. If you want to set up your party outdoors, you will need to purchase helium and extra balloon weights from a local party supplier.Balloon Garland Assembly
The balloon garland will take you around 2 hours to assemble, depending on your experience. Click here for our video tutorial on putting it together. If you’re in Auckland, we also provide a balloon assembly service. For availability inquiries, please contact us at 021-1819990.My Party Box Has All The Under The Sea Theme Party Supplies You Need
Does your child want an under the sea theme for their birthday party in NZ? Our Party Box has everything you need. Just scroll to the bottom of this page to place an order, or contact the friendly My Party Box team at 021-1819990 for any questions. We look forward to helping you create a magical celebration!Frequently Asked Questions
Mums love gifts that feel thoughtful and meaningful, something that says, “I see you and I appreciate everything you do.”
In New Zealand, popular Mother’s Day gifts include balloon bouquets with heartfelt messages, decorated brunch or breakfast-in-bed setups, and sweet handmade creations from the kids.
At My Party Box, we bring it all together with helium balloon bouquets, elegant tableware, banners, and cute little extras like cake toppers and bunting.
Want to make her day even more special? Pair your bouquet with matching decorations for a complete surprise she will never forget.
Start by choosing a soft, beautiful colour palette—pastels, florals, or rose gold are always winners. Use themed cups, plates, and tableware to set the tone, and add special touches like garlands, banners, or a “Happy Mother’s Day” sign.
Visit our website to create a standout centrepiece with our special Mother’s Day balloons! Add a sweet finishing touch with cake toppers, and elevate your setup with bunting or fans for extra flair.
From garden tea parties to breakfast-in-bed trays and even surprise desk setups at the office—whatever your setting, our curated tableware sets, backdrops, and balloon garlands help you build the perfect look.
Yes, we do offer balloon bouquet delivery, but it’s available for the Auckland region only.
If you have a preferred delivery date, be sure to check the delivery information at checkout and allow enough time to secure your slot.
To make sure you get your first-choice for gifts and also get them delivered on time, we recommend placing your order for Mother’s Day balloons at least 3 days before. For shipped items like tableware, banners, or signs, it is best to order 5–7 days in advance to allow for NZ-wide courier delivery.
Mother’s Day is one of our busiest times, so don’t wait too long! If we announce a cut-off date, you will find it right on the product pages.
Yes! You can personalise your glamorous Mother’s Day balloon bouquets with vinyl script. Please note that there may be a limit on the number of characters or font options available, and an additional charge will apply.
Check the product description to see if personalisation is offered. If it is, you can enter your custom message during checkout or in the order notes section.
