In my bathroom is one small window, which handle is 3 m above ground. Underneath the window stands my washing machine, so after showering, to get the humidity out, I need to climb on the washing machine in order to open the window. That is somewhat annoying and I am afraid the top of the machine will break through someday.
So I did some research for products to open windows which are hard to reach because of the place they are build or for disabled people living in places which weren't constructed for somebody with a wheelchair, for example. I found these to website offering what I was looking for (sorry that both are in German, but I guess the pictures (1, 2) give enough information).
The window looks like this. 6 o'clock position of the handle is closed, 9 o'clock is open, I don't need the 12 o'clock position.
However with costs more than 60 €, I wondered if somebody had an idea on how to DIY build something that fits the purpose and is not expensive.
Best Answer
My immediate thoughts are to get a large diameter wooden dowel (30-40mm, sold as stair railings or closet rods) and screw a large eye-bolt into the top of that and use it just as the tool you pictured.
Wrap the eye with tape or something so it doesn't scratch up your handle.
Another option, depending on the diameter of your handle, would be to get the wooden dowel and drill a large perpendicular hole through the end big enough for the handle to fit in.