Kids' birthday theme
A mermaid birthday party
Shimmer, shells, and a treasure under the sea.
Ideas for your mermaid party
Pick one or two from each and keep the rest simple.
Decor
- Teal and coral balloons with sea-foam garlands
- A shell and starfish table scatter
- Paper jellyfish hanging from the ceiling
- A shimmering fringe backdrop
Food
- Goldfish crackers in "fish bowl" cups
- Blue jello "ocean" cups
- Seaweed-green veggie tray
- Sea-shell pasta salad
Games and activities
- Treasure hunt with a map
- Decorate a paper shell
- Mermaid tail walk relay
- Pearl necklace stringing
Cake
A teal ombre cake with a fondant tail and candy pearls.
Favors
One small, useful or fun thing per child beats a bag of extras. How many to buy.
Colors
DeepBrightPopSoft
Pick one bright color for balloons and napkins, and keep plates plain.
What to do and when
The plan for a birthday party, counted back from the party day. Festidi puts real dates on it.
6 to 8 weeks out
- Pick a date, a start time, and a backup date
- Set a budget and choose your big two
- Write the guest list
- Choose a theme together
- Lock in the location and a rain plan
- Note food, accessibility, and comfort needs
4 to 6 weeks out
- Send the invitations
- Decide: hire an entertainer or run your own games
- Book rentals if you need them
- Order the cakeCake idea: A teal ombre cake with a fondant tail and candy pearls.
- Ask helpers and give them roles
- Make one contact and confirmation list
2 to 3 weeks out
- Order decor, tableware, and favorsDecor idea: Teal and coral balloons with sea-foam garlands
- Plan the menu and check allergiesMenu idea: Goldfish crackers in "fish bowl" cups
- Plan 3 or 4 activities, plus a backupActivity idea: Treasure hunt with a map
- Follow up on RSVPs
- Build your one-stop shopping list
The week before
- Confirm every vendor
- Lock the headcount and shop for food and drinks
- Prep favors, decor, and a playlist
- Write the party-day schedule
- Send the final party note
The day before
- Pick up the cake and set up what you can
- Pack a party-day kit
- Charge devices and share the run sheet
- Make the final weather and space call
Party day
- Set up an hour before
- Run the party and finish on time
- Reset the space and check for left-behind items
After the party
- Share photos and settle any remaining balances
- Send thank-yous
- Save photos and notes for next year
- Leave a quick note for your future self
Party-day run of show
For a 2-hour party starting at 2 pm.
- Final setup and safety checkSetup crew gets food, activities, and the entrance ready.
- Arrivals and free playKid wrangler greets kids and keeps an eye on arrivals.
- Main game or entertainerEntertainment lead runs the planned game or entertainer.
- Snacks and drinksFood lead puts out snacks and checks dietary labels.
- Cake and candlesPhotographer gets the group shot before serving.
- Craft, favors, and goodbyesThe host ends on time while energy is still high.
- Quick resetCollect gifts and check the space for left-behind items.
Free mermaid printables
Print at home on letter paper or card stock.
