Let's keep it simple: Choose a tangle (pattern) and apply to tile for a monotangle. One tangle can make an interesting tile just as if you had a string of different tangles.
I choose Tripoli... if you like jigsaw puzzles (and I do) you can fit Tripoli into any section if you just think of fitting puzzle pieces. I also used a Bijou tile (2 x 2) and with this small tile, I pulled out my Sukura Micron Pen #.005 which works on smaller areas (I added lots of different variations you can fill in with below.
My second tile is Tripoli gone floral !!! Who doesn't like flowers?
Now your turn: pic a pattern and make a monotangle.