These book-ends by Bart De Dobbelaer would make the perfect ends for any sci-fi book collection. In fact, Bart has me thinking that book-ends might be a fun new format to try building.
Bart has done his usual great jobs on these. The technical bits on the bottom have just the right amount of details to look interesting and clean at the same time. The contrast with the brightly colored organic tentacle shapes adds motion as visual interest for a scene that keeps me looking.