which takes up a lot of space upwards or downwards

The MagSquare 600 is made with a strong magnet which can be activated / disabled by just turning the handle on top

then tilt it vertically so that sticks

In this case

Legamaster Divider Tape, 1 mm., Sort julepynt which takes up a lotThin divider tape (1 mm.) for whiteboards and planning boards. Legamaster black divider tape is a quick and precise way of marking out lines, rows and columns on the board. The black divider tape is self adhesive and sticks to the board, but can easily be peeled off and moved around. 1 dispenser contains 16 metres of tape. Colour: Black. Width: 1 mm. Length: 16 metre. Product no.: Legamaster divider tape for planning boards, 4331 01. Whiteboard tape