I designed a USB tidy while awaiting delivery of my Ulitmaker. This is a significant revision of that design as I am a little more knowledgeable about the 3D printing process now.
The idea was to make the bewildering array of USB to something or other cables I've somehow accumulated easy to store and find when needed.
The design is very nearly fully paramterised. Certainly it is easy to vary the number of 'slots'.

I made this in PLA. As the eight slotter is quite long it needs to be well adhered to the Scotch Blue tape so I recommend checking the zero point and levelling the bed. Also, I suggest aligning the thing along the length of one strip (if your tape is wide enough), rather than across a number of strips and the tidy is difficult to remove and this minimises the loss of tape.