Don’t be a fool! Don’t throw away that CDR /DVD-R spool, use it for your tool (not that one, funny guy.) You remember those round thingys for storing CDRs and DVD-Rs we used back in the day, before them young-guns foisted their whippersnapper SSDs and USB sticks on us. I don’t care what they say, nothing beats punched cards and they sound better too! Other than for holding coasters, CDR spools are about as useless as their contents—until now.
Well, this isn’t necessarily a project, but shop hack. If you still have those spools somewhere in the basement or in the attic, they make very good saw blade holders. You can even anchor them on the wall or attach it to a pegboard for easy access. The long spindle keeps the blades from falling out during a minor tremor (hand) or even major one (earth). If they are too long for your tastes, just cut it.
You can even use them for holding the blades steady while sharpening. If you can think of other uses for these on the shop, share it!