I recently saw a fun looking manicure by @anya_sobko on Instagram. I've no idea what the technique is called, but after polling a few fellow nail ladies we thought something along the lines of the Mosaic blobicure.
The design is actually very quick and easy to create, but it does take a long while to dry. To create the look, paint you nails in the base colour and let it dry. Then, one nail at a time, paint a second thick coat, and while is is wet use a contrasting colour and place gentle drops of polish into the wet base in a mosaic pattern. Because the base it wet, the polish drops will spread, but they will not run into each other, instead they leave a thin edge between each colour.
Once you have finished all nails, let then dry about 10 minutes before applying a quick dry top coat. Then after that you will need to not doing anything with you hands for about 30 mins whilst the polish is still very wet.
The polishes I used here are Picture Polish Wisteria (original version) and Candy.