I recently purchased two wire grid walls for my booth , they made a HUGE differnence ... as you can get more display at eye level and just above . People will look up a little , but anything below 2 1/2 feet is like no- mans land.
They are not too expensive and are quite flexible as to the way you can use them. They do come in various sizes.
I did make a modification to the the hardware that was sent for the feet. I purchased wing nuts to replace the tiny nut they provide. The wing nuts make it much easier for a faster take down. Just wish I had gotten them sooner.
Oh one more tip .. for the tote bags .. I use balloons for a filler in the bag.