Scaffolding 
To dream that you are walking on scaffolding indicates that you are nervous about a high position you have obtained or would like to obtain in life. It may seem like the life you have built for yourself is a precarious network of luck and lies.
To feel light and free standing on high scaffolding indicates that you are comfortable living on the edge and moving ahead in whatever direction life leads you.
Kaleidoscope
To dream of a kaleidoscope indicates the merging of multiple aspects of that person's life. It is also representative of diversity and diverse paths, which suggests that the dreamer is having difficulty deciding what to do for a career.
Slot Machine
To dream of seeing or playing a slot machine indicates that you are being too frivolous with your finances. It also implies that you should focus your efforts on a task or project that will create more important results.
Record Player
To hear a record player in a dream suggests that your mind is caught going in circles.
To hear a broken record in a dream indicates that you are struggling to make progress and overcome a recurring problem.
Revolving Door
*See Door.