In Time and Again, Jack Finney brought to life the idea of Time Travel through focusing on artifacts of a certain era, and excluding anything of the modern day that would interfere with the illusion. This same concept drives the film Somewhere in Time. Not that I have made a lifelong study of such things or anything.
I have started building a time machine in my home. It's a sensory time machine, filled with things that transport me through sight and sound to earlier times in my life. It works remarkably well. I can't affect my own past -- nor would I want to! -- but I can come surprisingly close to re-experiencing it.
Some of the things I've been revisiting recently, which form the building blocks of my personal Time Machine:
Hey Deanie, won't you come out tonight?
To Boldly Go...
What's in your Time Machine?