What is the meaning of "ve'es Kol asher Ye'aseh bahem"?
Rashi (citing Targum Onkelos): It means " ... and all that was handed over to the b'nei Gershon".
Ramban: It means " ... and all the many tools that were manufactured for use in the Mishkan and the Chatzer.
What are the connotations of "Ve'avadu"?
Seforno: It refers to the small implements that were required arrange the above-mentioned Keilim, such as tweezers ans hammers, to hammer the pegs in place and to remove the pegs.