How can I copy a selection of files from multiple folders into multiple folders?
You can use gcp from homebrew for this. Install gcp with 

brew install coreutils


Then You can make something like this:

gcp --parents drawable*/ic_icon1.png /path/to/output/dir


This will copy all ic_icon1.png preserving directory tree.

From man gcp:


   --parents
          use full source file name under DIRECTORY