As gdhal says, bare wire is a completely valid solution to connect your cables as well. However, based on you posts, I’m guessing that there’s no way you’d go for that because that’s not how they come from the manufacturer. With that said, might I recommend that you change all the bananas to the newer BFA banana design? It’s far superior to the old school banana connector. It provides a much larger, stronger contact area and, because of this, I’ve found it to be even better than bare wire. Here's an inexpensive example and it has a screw on connection system, so you wouldn't need to crimp or solder:
https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F201718034056
These are what I use, but you'd need to crimp or solder them:
https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F160535708043
https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F201718034056
These are what I use, but you'd need to crimp or solder them:
https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F160535708043