How to make portable Firefox with the necessary addons and, if possible, plugins?

Question

Windows

How to make portable Firefox with the necessary addons and, if possible, plugins?
To be able to run it from a flash drive?
OS Windows 7 32 bit or Windows XP 32 bit.
Ready ones are of little interest to me.
First, it is not clear how to do it.
Secondly, it is difficult to customize.

Answer 1

Take any ready portabel and put what you need. It will be stored in it.

Answer 2

What is the problem here, click on the big green Download button, install where you need it, go to Add-ons and install the necessary add-ons.