[For Seniors] Collection of Pet Bottle Cap Puzzle Challenges
There are many recreational activities that make use of plastic bottle caps, aren’t there? Among them, have you heard of the plastic bottle cap puzzle, which is recommended for preventing dementia? It’s a recreation that uses sheets with pictures or letters and matching caps that have the corresponding pictures or letters on them.
Because small caps are used, it helps with hand and finger rehabilitation and also stimulates the brain.
In this article, we introduce a variety of prompts you can use for plastic bottle cap puzzles.
There are a wide range of ideas—from simple pictures and numbers to national flags and difficult kanji—so please choose prompts that match the physical and mental condition of the elderly participants.
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[For Seniors] Collection of PET Bottle Cap Puzzle Challenges (11–20)
Single-character kanji for bird names

Do you know how the kanji 隼 is read? It’s actually pronounced “hayabusa,” meaning peregrine falcon.
It’s interesting to think that even a single-character kanji can be a bird’s name, isn’t it? A PET bottle cap puzzle that uses bird names written with single kanji characters might be enjoyable for older adults as well.
It could be helpful to add furigana to both the caps and the sheet.
While playing the game, older adults might enjoy gaining new knowledge, thinking, “So this bird uses this kanji.”
Sea creatures

Let’s have fun with a PET bottle cap puzzle featuring kanji for sea creatures.
For example, you place pieces like ‘shachi’ (orca) or ‘azarashi’ (seal) onto a sheet that has the same characters written on it.
Including illustrations of the animals alongside the kanji answers might make it easier to engage.
Many older adults likely know a variety of sea creatures.
With a familiar theme, this game could be approachable for seniors as well.
Since the theme is sea creatures, another enjoyable activity—though not a puzzle—could be a “fishing” game using caps labeled with the kanji names of sea animals.
Kanji that look readable but aren’t

In everyday life, we see many kanji characters.
The kanji used for names of things may be based on imagery of the object they represent or derived from their roots.
Here, we introduce a PET bottle cap puzzle featuring kanji that look readable but are tricky to read.
You may find that some kanji are pronounced differently from how you vaguely thought they were.
Through this puzzle game, some older adults might be surprised to learn, “So this kanji is read like this!” There may also be readings you encounter for the first time.
Older adults, too, may enjoy progressing through the game while having fun with kanji readings.
map symbols

Don’t you find that the map symbols you learned as a student are easy to forget once you’re an adult? Using plastic bottle caps, you can make learning them fun again.
Just write the same map symbols on both a sheet and on caps, and you’re ready to go.
Match the pairs.
If you label the sheet with words like “city hall” or “factory,” it gets a bit harder and more satisfying.
There even seem to be map symbols for senior care facilities.
Some symbols are easy to picture from the icon, while many aren’t, so once you start you might get really absorbed.
It’d be great if doing lots of these puzzles makes reading maps easier.
prefectures

Have you traveled a lot over the years? They say that as people get older, their preferences often shift—from being “Okinawa types,” preferring trips to warm regions, to “Hokkaido types,” favoring cooler destinations.
How about you? How about playing a game where you place caps labeled with prefecture names onto a map of Japan, along with sharing your various travel memories? Each time you place a cap, memories of visiting that prefecture are sure to come back.
You might end up talking more about your memories than playing the game.
Making a larger map sheet and playing with a big group would probably make it even more fun.
Four-character idiom

From everyday expressions to ones we only know by name, and even those we’ve never heard of, there are all kinds of four-character idioms in the world.
How about a puzzle game using plastic bottles that makes use of these idioms? The idea is to leave blanks within a four-character idiom and have players figure out which characters fit.
You write characters on plastic bottle caps, and players choose the correct ones from those caps—this both narrows the choices and serves as a hint.
I think the key to making it fun and engaging is to be creative about which idioms to use, and which parts of the idiom to leave blank.
[For Seniors] Collection of PET Bottle Cap Puzzle Challenges (21–30)
Picture matching

It’s a matching cap puzzle.
Draw your favorite pictures or patterns on the caps, then prepare the same images on a sheet—one for each cap—and simply match identical images together.
You can go with easy designs like stars or smiley faces, or try drawing more elaborate, detailed illustrations.
When you play, it’ll be about making quick judgments, but having a few similar-looking patterns will give you more to think about.
Once you get the hang of it, a time-attack challenge could make it even more exciting!



