It depends on what you enjoy. i found several thousand while living in missouri, but i have also bought some, my colection is insured for a fair amount. I have a water bottle made from the bladder of a bear, covered in clay, wrapped with leather straps and has a cap made from buffalo horn, has bird whistle made from bone, and was found with a axe and several other artifacts in a cave in N.M authenticated by Univ of N.M at over 400 years old in 1993.
I bought entire collection for $ 750 17 yeats ago. Last offer I had on the bottle alone was $5000.00, and that was 5 years ago, turned down $ 1000 offer on the axe, it has an iron bit and still on the handle and leather wrist strap.
Now figure out how they got iron for the head in the 1500's and you will know why it is valuable to me and other collectors. Not bad for a $750 investment.