I had plans for a simple time machine for years.

Yesterday, when my mother's new refrigerator arrived, I tested it.

After the refrigerator was taken out of its box, I entered the box and used a stool to sit and a long metal lever for steering.

After I came out my mother asked if it worked.

I replied that it did, but the device had a minor glitch:

It advanced forward in time only at a constant speed of 1 sec/sec.

Back to the drawing board I guess...

A little more scribbling with my tin-foil-hat on seems to have improved the final design.