Walmart offers Deli Electric & Battery Pencil Sharpener, Automatic with Adjustable Thickness, Black for $9.99 (orig. $19.99).  Free shipping with Walmart+ or on orders over $35.

Product Description:

Deli Electric Pencil Sharpener, USB & Battery Operated with Extra Blade Refill, Sharpens Fast, 3 Adjustable Sharpening Modes, Portable and Safety Design for School Classroom Office Home Use. Sharpens Fast: The sharp blade and enough power makes it super fast to sharpen pencils, usually 5 seconds. 3 Adjustable Modes for Different Tips: Deli electric pencil sharpeners are designed with 3 sharpening settings, which can sharpen pencil lead to fine tip, medium tip and broad tip respectively.

• Battery Operated: Our pencil sharpeners can be powered by 2 AA batteries which could be convenient when you have no access to a outlet or adapter. Our pencil sharpener works great too by plugging in a adapter or outlet, which saves you the cost to get batteries and could be environment friendly
• Safe Sharpening: The helical blade protects pencil lead from breaking off and will not over-sharpen pencil lead or shorten your pencils. Suitable for various pencils including 2 pencils, colored pencils, charcoal pencils, etc.
• Large Shaving Box: Our pencil sharpener comes with large transparent shaving box which can hold quite a bunch of shavings. The shavings could be easily discarded by taking off the top cap