See these proposals for O gauge Christmas track plans, suitable to be assembled around the Xmas tree. [>>>] 
Read this post to know more about the Marx O27 track system in SCARM and download the preliminary library to test it. [>>>] 
See these proposals for O gauge Christmas track plans, suitable to be assembled around the Xmas tree and placed next to the wall or in some of the room corners. [>>>] 
If you want to use a high quality turntable in your O-scale track plan, take look at the products of Millhouse River Studio and download the SCARM library file from this post. [>>>] 
See these proposals for O scale Christmas layouts, suitable to be assembled around the Xmas tree, placed in some of the room corners. [>>>] 
Read this post to see about the new website with useful libraries and objects in O-scale, created by Joe and John DiMaggio. [>>>] 
Read this post to know more about the MTH RealTrax system in SCARM and download the preliminary library to test it. [>>>] 
This is the O-scale layout, originally designed with SCARM and sent by JumpJet. Dimensions: 3926mm x 1085mm (155" x 43"); Complexity: medium. [>>>]