* add blocker (say ublock)
* js disabler (noscript)
* https stuff
* anti tracker
* url cleaner
* user agent spoofer
* cookie cleaner
* whatever decentraleyes does
* enable the right settings in about:config
* …?
All the extensions are there already, but it would guarantee them working well together and you wouldn't have to look for each extension and wonder if it's actually the one you want, but just install "the one".