Not really high tech, but I don't know where to post this otherwise.
Just bought a bathroom curtain over the Internet, only to discover that it is attached by sticking a pole through the holes at the top. Not much imagination needed to foresee that these holes will tear out within a month, so I started to look for eyelets (or grommets, whatever they are called).
There are metal eyelets available in Japan but they are for holes to only up to 15mm diameter, while mine are 25mm.
Bigger eyelets are available elsewhere in the world, but I have not been able yet to find them in Japan. I tried some home centers, 100 Yen shops, etc, but nowhere. Curtain shops are willing to attach them to my curtain for outrageous prices.
Anyone know where I can buy such eyelets? Even plastic ones that can be snapped on should be fine. Target price is up to 50 Yen per eyelet.
Here is an example of what I am looking for.