Outdoor and travel covers that fit fat tires and racks.
If your e-bike lives on a patio, balcony or carport, a cover is cheap insurance. Sun is the real enemy in North Texas: months of UV fade paint, crack saddles and grips, and chalk the plastics on displays and battery cases. Then come the storms, which find every unsealed connector, and the dust that works into the drivetrain. A cover keeps the worst of it off and also makes the bike a little less obvious to anyone walking past.
Sizing is the mistake people make most. A cover designed for a road bike will not stretch over a fat-tire bike with a rear rack and upright bars, and forcing it strains seams and leaves the wheels exposed. Measure length tip to tail, height to the top of the bars or display, and width across the bars, and buy a cover listed for those dimensions. Many covers are now sold specifically for fat-tire or cargo e-bikes, which is a useful filter.
Look past the word waterproof. A fully sealed cover traps moisture underneath, and a damp bike under a hot cover in August is a corrosion incubator. Good covers have vents or breathable panels, a lockable hem or buckles so wind does not turn it into a sail, and a lock hole so you can run a cable or U-lock through without removing the cover. Lighter travel covers are a different product meant for the back of a truck or a car rack; they protect from road grime and rock chips but are not built for months of sun.