You're looking for a 40 dram amber prescription vial. The nearby
ball field makes an unwitnessed cache find during an actual game
unlikely.
The park includes swings, climbing things, a toddler area, a
picnic shelter, restrooms & drinking water (during the summer)
and dog park that
is always busy when I visit. Posted sign indicates dogs are not
allowed except at the dog park. Park closes at 11pm (but no
indication of when it opens!).
Initial contents include some pirate coins, some
glow-in-the-dark rocks, a "sit/stay" clicker, windowscraper,
whistle, some gold & silver nuggets, a log, a pencil and a FTF
coin. A small-ish travel bug would fit.
The space occupied by the nine houses behind you is
being considered for inclusion in the park.
Congratulations,
Charlie for
FTF!