According to Downsville's Main Street Then and Now compiled by Town Historian..... Downsville was formally known as Shockport. It was later renamed to honor Abel Downs. Abel owned a Tannery (On Tannery Road). He also had a home on the corner of Main & Maple Ave. Their mansion burned in the 1830s. George W. Downs, inherited this property from his father, Abel and had his Victorian home built by CE Hulbert. The Downs family also owned a hotel and restaurant which burned in 1932. Across the street from this hotel were large barns and stables to accommodate the horses and carriages of their guests, as well as livestock being driven to market. The hotel registers listed guests as well as horses, cattle and turkeys housed at the hotel property.
There is so much more to learn about Downsville at https://www.colchesterhistoricalsociety.org/downsville.html, It was a very bustling town in its day. There isn't a lot here anymore, but it is a very nice place to visit or stay and raise your children.
The cache you seek is a small silver bison tube.