Shag Carpets
Nothing says “I’m still in the 1960s” like a shag carpet. Shag carpet was an enormous miscalculation; it never looked good and felt strange underfoot. I believe that future generations will be delighted to carry on this tradition. Let’s not even get started on trying to keep it clean. Instead, you could hire a groomer.
Visors
Here is something else that appears to be extremely foolish. Buy a hat to keep the sun off your face. There are a lot of good ones there! On the other hand, a visor will always reveal your secret if you appear to be balding…