Things are back to that one day a year where a few things go crazy, including some Pokémon things. That would be April Fool's Day, and already some realms of the world have their own shenanigans for this very day - including for Pokémon (and specifically Pokémon Go), but that's to be explained shortly. Now, a key part of the Pokémon experience is being able to capture Pokémon in special capture balls in the range from Poké Ball to Great Ball and beyond, so the concept of "balls" are inherently tied to Pokémon in this case. Of course, that's in part a formality derived from the main series games, and capture balls may or may not be needed in other cases. Yet the "ball" concept may still manifest itself in other ways.
Perhaps in close relation to the ubiquity of Poké Balls specifically, some Pokémon species have developed appearances that resemble that ball. Then, when they're interacted with - in both intended and unintended ways - expected and unexpected consequences may result. That may still be exceptional, though, and it is likely in the usual cases one will interact with them in good ways, or as in the older main series games, be able to find balls containing items in their place and not have to deal with them at all. The species and mannerism of getting items may be somewhat idealized, but they're still what they are for their worth.
In situations where the capture balls are not pertinent for their actual usage, it may still be nice to have a bit of whimsy with them - like having beach balls in their motif, as some anime episodes have demonstrated, or having figures that closely replicate the look and feel of the capture balls. Both are quite perfectly suited for real-life applications, although the latter is more admittedly so and the former could be considered a bigger whimsy of the Pokémon world itself, but if they can work out for fun, they'll work out nonetheless.
Me: What do you think?
Ash: Poké Balls or any kind of balls or fun!
Goh: Fun and functional. I recall you two demonstrating it last year.
Ash: Oh yeah!
Me: Of course, that happened. (See below.)
Ash: But then, Pikachu prefers being outside with me, so it doesn't really care for balls. Right?
Pikachu: Pika chu. ["Right you are."]
Goh: What's the story on that?
Ash: It's kind of long - it might take a journey for some people to understand.
Me: And now's not the time for that.
Goh: Well, I gotcha.
Me: Anyway, I don't have anything special for Ash this time - I thought I'd just call you up to talk.
Ash: That's fine - hey, is that an Amoonguss over there?
Me: Looks like it. I'll go catch it real quick... What do you know - it's a perfect one.
Goh: Very nice!
Pikachu: Pika! ["Nice!"]
Ash: Now you have a ball Pokémon you could really deal with.
Me: That's very true. It'll be fun trying to make it work somehow.
All things considered, there's a place for Pokémon balls somehow and somewhere for everyone that enjoys them. There will be ones that are functional for the capture of certain species, while certain species function to duplicate the look of the capture balls, and look-alikes of the balls will be abound in one form or another. It's a ball-filled life for those who fancy and deal with Pokémon, and there is just no substitute for that.
Happy April Fool's ...and have a ball (that is, fun).
Two years ago: April Fool's Day 2023: For the Birds
Three years ago: April Fool's Day 2022: Life in Duplex
Four years ago: April Fool's Day 2021: Aipom Business
Five years ago: April Fool's Day 2020: Truth in a Post
Six years ago: April Fool's Day 2019: Objectivity and Subjectivity
Seven years ago: April Fool's Day 2018: Stepping Back, Moving Forward
Eight years ago: It's April Fool's Day!