Saving All Tabs in Firefox

Often while reading technical articles and solutions, we might end up opening lots of tabs.

Now, having lots of tabs open has its own downside , like slow loading.But a bigger problem is losing all these tabs data if your browser crashes for some reason( chances of crashing increase with increasing tab count and contents).

These tabs are not exactly 'Bookmarks', as in you don't want to bookmark all these sites forever, as they might only be for temporary reference. And you don't want to save one-by-one.
Instead, there is a nifty option in Firefox to save all tabs as bookmarks at one shot. Pressing ctrl+shift+D will prompt you to enter a bookmark location and folder name under which all your currently open tabs will be saved as bookmarks.

But I didn't find a way to load all these tabs back at once if required.

So I am still looking for a solution to this problem of mine. The TabSaver extension of Firefox also seems to address similar problems.

Will check it out and update back here.

In mean time if anyone has any suggestions/solutions, please add in comment.