Since my Glowforge is in the garage, I wanted to protect it from dust, etc when not in use. This $5 shower curtain from Amazon did the trick. You don’t really need a pattern. Just cut the corners, fold and tape the hem with masking tape and sew on a regular sewing machine. Make it bigger than you think you want so it is easy to take on and off.
I remove the exhaust hose when not in use to keep the bugs and critters from crawling into the Glowforge. The cover also drapes over the exposed exhaust port.
I remember the days using old sheets to cover the plants.
TIPS
Purchase 20-30 bricks.
On your driveway —- lay out some of those light weight Dollar Tree shower liners and attach 2 edges together with a stapler. This larger piece can be draped over large flowering bushes. Place the bricks to hold the liners down.