In the Inika builds, the upper arms and upper legs utilize a single connector piece that features two ball sockets and three technic holes.
I am looking for a substitute that replaces this piece but works the same way. This is because I am trying to use the newer, more robust ball sockets that LEGO has released, and I do not trust the older connecting sockets from the 2000s since they break easier.
Any tutorials and tips for substitute pieces or constructions are welcome.