Is there a Add-on which makes these really difficult shapes?
(those last three rows) I need that first difficult shape
I don’t believe there is an addon that automatically creates one of the infinitely different shapes that you just happen to be thinking of.
You can make all those shapes straightforwardly with curves http://wiki.blender.org/index.php/Doc:2.6/Tutorials/Modeling/Curves/Bézier
Hi
Or use Grease Pencil.
Drag Your picture into Blenders viewport Press Num 5 = Ortho view…Go N - Panel Background Image - Turn opasity up.
Press d and left click to draw…Draw the shape…In T panel find the Grease Pencil tap…There is a convert button…Convert it to bezier curve…Select it Press Alt + c to convert it to mesh…See Picture
Now the Mesh have 1000 of vertex…So go edit…And remove doubles…It open a panel in button of T - Panel…Here You can set Vertex number…Reduce the number and You have You shape…see picture.
I think You also can make many of them with a Cube - Subdiv and Loop cut’s…Puff Puff
Tai
Using curves is a good way to go, and also check out a quick and easy method as demonstrated in some of Andrew Price’s tutorials: http://www.blenderguru.com/tutorials/create-a-shiny-logo-animation/ and http://www.blenderguru.com/tutorials/recreate-the-starcraft-2-logo/