Computer software (optional): Python and ImageMagick
Masking tape art on IKEA LACK table
Implementation is quite simple.
Cut a strip of the 12mm tape about 57cm long and put it on one edge of the table top. Make it just overlap the long edge to cover the join between the laminate on the top and the side.
(On the LACK tabletop I got, some of the laminate had started to lift a little at the edges. So I wanted to cover that up.)
Cut another strip of any width about 57cm long and put it on, next to the first strip. Repeat until the surface is covered.
Wrap the sides with 24mm black tape.
If you put a strip of tape down and then notice a slight gap between it and the strip next to it, give it a bit of a push with your finger. You will not get all the strips to be perfectly straight.
The table top has four holes in the underside from where the legs screw in. Measure carefully where the holes are and then attach screws/ nails on the wall to correspond with these holes. Decide if you want to have vertical or horizontal stripes. Then slide the table top on to the nail heads.
Planning the colour stripes
You may or may not wish to plan the order of the stripes. I wanted to use equal amounts of each width of each colour, so I wrote a Python script the output of which can be fed to ImageMagick to create an image I could use as a guide.