Vessel tangles

There are tangles that I think of as vessel tangles: tangles that are quite simple and essentially empty, allowing you to fill the spaces in any interesting manner you want. The tangle can be a vessel for a lot more.

It helps to do the basic tangle larger than usual. Here are four of my favorite vessel tangles - alphabetically, showing no favoritism!

ASSUNTA
From Rick Roberts. Find step-outs here. Here's Assunta in its simplest form:

And here it is with two different fills:

Tangles: Assunta, Cubine, DooDah, Seljuk 

BEKK
From Cyndi Knapp. Find step-outs here. Here's Bekk in its simplest form:

 And here it is with various fills:

Tangles: Black Pearlz, Bekk

EXIS
From Jennifer Hohensteiner. Find step-outs here. Here's Exis in its simplest form:

And here it is with various fills:

Tangles: Exis, Knase, Zonked

PICO
From Staub Korn. Find step-outs here (wait for it). Here's Pico in its simplest form:

And here it is with two different fills:

Tangles: Bosch, Crescent Moon, Knightspeak, Paradox, Pico

Do you have vessel tangles you like to fill with other things? What are they?