Playing around with my own typeface ideas

Having done a fair amount of research and gathering inspiration, I put my pen to paper to start coming up with my own ideas for a font. Completely at random, I've thought of four examples right here, all very different from one another. The first being an industrial/mechanical based typeface, the second one being a stick-figure typeface, the third taking inspiration from children's building blocks and finally, an organic-inspired typeface - this being my favourite of the lot.

I find the more simple typefaces I've created here (stick figure & building blocks) to be more distracting than the other two for use as an actual font. I think this is because the imagery isn't contained within the lettering itself, as opposed to the others which have a clear outer shape, thus making them more readable and practical. I also like the details in the first and last ones, particularly being drawn in fine-liner you can achieve some nice patterns and shading. Since my favourite of all is the organic-themed one at the bottom, I shall have to research some textures of natural forms and shapes to see what other designs I can achieve if I'm to take this idea forward.