Another trick that I recommend is purchase flat sheets and standard pillow cases..preferably King or California King..depends on size of kit.
Large sheets you can fold up to 3-4 times...you can purchase enough for all the drums/cymbals/pedals etc cheap..
Then roll the rack tubes one by one..(roll one then add one..roll repeat until sheet is used up) wrap the bundle with Velcro strapping..
after the Kit is setup the sheet doubles as a cover..
Use standard pillow cases..put a drum or cymbal in each fold/wrap over the excess as padding to stack them on top of each other..
I generally get the Black..the better the material , the better the padding..(like microfiber etc)
Black tho..has a tendency to get lost in a dark stage environment..so keep that in mind..
EDIT:
I forgot to mention for a few dollars more and extra protection eBags also sell "compression/packing cubes" that stack into the Duffel bags... make excellent E-Drum or module cases.
Single sided , double sided and the nesting types when empty fit into one another
Here is an example of the
"Large" double sided packing cube , which should hold (2) 12" Alesis drums
eBag packing cubes