Random orbit sanders. My threw a pad....

If it goes in the trailer it is best in a box. If it sits in the shop on a shelf(the bench) no box they just take up space.
The other thing with the box is when you pick up at the end of the day/job you know at a glance that you have all the parts back and don't leave as much behind.

Nice sander! That should give you many years of service.

I usually have most of my tools stored in their respective boxes. More so because I am out in the field as well as in the shop so I can just grab a box and toss it in the van and go. (But also, I am organizationaly challenged to introduce some political correctness here....) so keeping them in their boxes when not in use helps me to find them when I need them!