I started with m1s2h3's flashforge finder spool holder thing and modified it to include a second hook that would house a filter on it. I modded the hook to flip the connector on it to the opposite side, then modded his filament feed guide to connect the two hooks. On the second hook I made an insert point for a modified version of sneakypoo's filament dust filter.

I recommend gluing the connector rod to both hooks, but otherwise it works great and gives additional stability to the spool holding hook when loading and unloading filament.