We have had our own design of Arduino prototype shields made up. These are used to help build prototype exhibits and sometimes find their way into the finished product.
They are carefully designed to offer maximum flexibility of component layout while keeping connections simple.
If you want to buy one (or some) then contact us for options
Or you can get them on eBay:
https://www.ebay.co.uk/itm/Proto-shield-Arduino-UNO-and-Leonardo-prototype-shield/164227105108
https://www.ebay.co.uk/itm/5x-Arduino-UNO-and-Leonardo-prototype-shield-Proto-shield/164227108198
https://www.ebay.co.uk/itm/Arduino-prototype-shield-UNO-and-Leonardo-proto-shield/164168936768
https://www.ebay.co.uk/itm/2x-Arduino-prototype-shield-UNO-and-Leonardo-proto-shield/164227099505