Ha! Is that useful for a serious use like scientific study of the content of cigarette smoke, or just a joke about smoking seven cigarettes at once?

(I bet there's more description on the Printables page, but Printables login-walls "NSFW" items, and I'm not going to the trouble of registering for a Printables account.)

Edit: I lied. I went to the trouble of hacking Printables to see the content without logging in. In developer tools, I deleted the modal and backdrop behind the modal, removed the applicable position:fixeds and overflow:hiddens, and found and disabled the filter:blur(...). For those who want to know but don't want to do what I did, more description from the page follows:

Water your plants and take a smoke break with this 7 Cigarette Gardena Adapter! Introducing the 7 Cigarette Gardena Adapter, a unique and versatile tool designed for gardening enthusiasts who also enjoy smoking. This innovative adapter allows you to water your plants efficiently while accommodating up to seven cigarettes at once, providing a seamless blend of leisure and productivity. Whether you're tending to your garden or taking a break, the 7 Cigarette Gardena Adapter ensures you can do both with ease and convenience.

The 500 cigarettes adapter is so funny to me

Five hundred cigarettes.

Oh man, check his profile on printables. He's got a 500 cig adapter. Man has designed the route to speed run cancer acquisition.

Not food safe.