Here are the parts (I have changed the bolts used to secure since the initial post now for a better look) for Roughly $60 total:

1. Rubber Feet: https://www.amazon.com/dp/B0BRHG149N?psc=1&ref=ppx_yo2ov_dt_b_product_details
2. Mending Plates: https://www.amazon.com/dp/B0B215S9FM?psc=1&ref=ppx_yo2ov_dt_b_product_details
3. Bolts for Speaker Connection: https://www.amazon.com/dp/B008RNF8IG?psc=1&ref=ppx_yo2ov_dt_b_product_details
4. Cap Screw Bolts for Rubber Feet Connection: https://www.amazon.com/gp/product/B089RP3XWX/ref=ppx_yo_dt_b_asin_image_o00_s00?ie=UTF8&psc=1
5. Knurled thumb Nut for Rubber Feet Connection: https://www.amazon.com/gp/product/B0B5YY7V9N/ref=ppx_yo_dt_b_asin_image_o01_s00?ie=UTF8&psc=1