4 hours ago, dcarch said:
I use to have smaller version of similar design for tea making.
dcarch
Yes! It's a giant tea strainer, as used by the Dong ethnic minority in the preparation of their "oil tea". This tea is described in this post. It is made in huge quantities during festivals, weddings etc., so a giant strainer is a useful tool.
It could, of course, also be used for many of the suggestions above (perhaps not lacrosse).