For macchanger, I got the source from http://www.gnu.org/software/macchanger and did the following:
Put the BashBunny into arming mode (switch 3)
Copy the macchanger-X.X.X .tar.gz to the BashBunny; let's say /loot/.
Create a payload for Switch 1
LED SETUP
ATTACKMODE SERIAL STORAGE
cp /root/udisk/loot/macchange.tar.gz /root/.
LED FINISH
Save, unplug the BB, move to switch 1, and plug back in.
When the LED indicates Finished, use your serial terminal program to log into the BB
Now, you can compile and install:
# you should already be in /root
tar xfz macchanger-X.X.X.tar.gz
cd macchanger-X.X.X
./configure
make
# NOTE: the following only puts the binary into the BB system. Use 'make install'
# if you want everything including docs.
cd src
cp macchanger /usr/bin/.
cd ../..
rm -rf macchanger-X.X.X # if you want to remove it.
Once done, you'll have macchanger readily available.
Enjoy!