After upgrading to the AM8, I wanted to get my tools in order. This is a remix of JhoShi's Anet A8 tool holder, adapted for the aluminium extrusions of the AM8. It can hold all the original tools that came with the Anet A8.
I took the original apart and arranged it in a saddle that can be stuck onto 2040 extrusions (or any 20mm wide bar for that matter). It's a snug fit. I printed mine with -0.03 mm inset and it fits tight. If you are not confident with your printer calibration, use a larger inset or scale the model up a couple of %.