Creality Cr10 Ender 3/2 Etc Dual Spool Holder

Edit: Newer, bigger, beterer Toucan Quad Spool holder now available, I know silly name, but trust me its Toucan shaped what more could you possibly want from a spool holder https://www.thingiverse.com/thing:3062763

--------------------------------------------------------------------------------------------------------------

I can't keep loads of spools lying around kids/space/money etc, but figured if I can keep one mounted on top of the printer, why not two?

Saves time swapping spools