Are you tired of those pesky humans supplying you binary data in human-readable formats?
Dehumanize can help you translate the data to a format that you can understand (aka. raw bytes).
echo "FFFF" | dehumanize --hex
echo "FF FF" | dehumanize --hex --separator " "
echo "0xFF, 0xFF" | dehumanize --hex --separator ","
echo "255, 255" | dehumanize --separator ","
echo "/w==" | dehumanize --base64