Connectors

Hello

currently I am looking into replacing the wiring of my cheap chinese printer.

Therefore I would like to ask all of you which connectors you are using. For example to connect everything at the hot end with the rest of the system. (I dont want to solder everything in place as I would like to be able to replace something easily in the future)

Also I got myself a Noctua 40mm fan but I cant find the connectors they used. So which connector do I need to buy to connect to their fan?

I am not a big fan of soldering to wires together, what other light and small options are there to get two wires together or maybe even a Y connection?

What crimping tool can you recommend for crimping ring terminals as the crimps I make look not that good with the tool that I got.

Thank you very much for your help. :)