I designed this as an alternative to the other view overhead spool holder designs like https://www.thingiverse.com/thing:1608830. I've been regularly switching between spools and found it was too tricky for my taste.
For this design, I've made it so that you can have multiple spools installed all on their own rods to make it easy to swap one out without messing up any other spools. I've also added a flange to the rod to make it easier to install and to make sure the supports don't slip. You shouldn't need any zip ties or bolts as the holders should nicely clip into the Lulzbot frame.
There are 2 different rod lengths and they should fit the typical 1kg and 2kg spools. The 2kg rod is a little beefier to accommodate the additional weight.
Print 2 end holders, and however many rods and dual holders you want to go in-between.
Was printed on a Lulzbot Taz6
If using Cura, you will need to scale 1000% and rotate appropriately so there are no supports needed. If you can correct it or tell me how to correct that please let me know! I've designed this in Inventor and apparently it exports weirdly.