Numen/For Use was formed by Sven Jonke, Christoph Katzler, and Nikola Radeljkovic, with offices in Vienna and Zagreb. Among their many projects, For Use has several impressive packing tape installations; elevated tubes created by winding tape around columns and extending it to create passageways strong enough for people to enter and interact with the structures. In some views they look like monster cobwebs.

The top installation was created for a 20-artist exhibit at the Schirn Kunsthalle Gallery in Frankfurt. The installation was completed in approximately 200 hours using 50km of transparent packing tape.

The second structure above was createdas part of the International Design Festival DMY in Berlin, at the Tempelhof Airport, out of 700 rolls of tape (38km) in 240 hours (4 days).

The last project above, represented the Vienna Design Week at the Mikser Design Expo, Belgrade.

via Juxtapoz