Back in the 1950/60s slot car racing was one the most popular hobbies around for both kids and their fathers with over 2000 public slot car tracks in the United States alone. Slot car racing has made a come back recently but not to the level of the 1960s in the United States. Overseas it's much more popular today.
Collecting costume jewelry from the early 20th century can be fun and can change up any outfit. My wife gets compliments all the time when sporting her collection of Art Deco pins, brooches and bangles. The majority of jewelry today is made in China and is usually copies of pieces from the past.
Found this key date 1892 CC Morgan silver dollars at a recent estate sale. Even in a VG-8 very good condition is still worth a couple of hundred dollars as a mint state version would fetch up to $9,000.
The Art Deco Period went from 1920 and lasted through the 1930s. It is defined by a symmetric designs in all things from architecture to jewelry. This was post World War I and the ladies fashions had evolved from corsets and long sleeved dresses to no sleeved short flashy dresses “Flappers”.