Summer birthdays

Okay I know DD is only 7 months but I need to atleast come up with an idea of what to do. I know since her birthday is May 31sr, it'll be outside but thats it. DD1 theme was princess and I wanna do something else

Ideas?

Does she show an interest in anything in particular? DS loved anything Sesame Street, so thats what we did for his theme. Does her room have a theme? As for the place, I am thinking about just doing pizza this year, and then just taking him to the zoo, or somewhere fun on his actual birthday.

Have a water party in the backyard.

Little pool for the little ones, water balloons, cool sprinklers for the older kids to play in...maybe buy a sandbox or sensory table with sand and water...

You can have an "Under the Sea" or "Beach" theme.

For my daughter's third birthday we did a Never Land theme. Trampoline was pixie hallow, playhouse/swing set was hangman's tree, we have a pool and it was cannibal cove, we have a large blow up pool for the kids who could not swim and it a mermaid lagoon, and we got a slip and slide with a blow up crocodile for crocodile creek. We decorated each place accordingly, and decodes the inside with Peter Pan posters and a London city scape. We do an outdoor party every year, and have hamburges, hotdogs and summer side dishes. We invite friends without kids too.

The never land theme was a hit, but I had to scour online for Peter Pan decorations. I noticed that this spring Peter Pan is being re released by Disney, so I am sure Peter Pan party items will be much easier to find!