Amazon has the X-ACTO KS Manual Pencil Sharpener (Vacuum Mount) for $10.09 with free shipping on $25+ or with Prime. List price: $28. It vacuum mounts to any nonporous surface. Features X-Acto dual hardened helical cutters.
Has good Amazon Reviews.
Amazon has the Ardwolf Fingerprint Keyless Entry Door Lock (4331021217) for $179.99 - $32.40 off with coupon EFSROTJW = $147.59 with free shipping. Features intuitive OLED touchscreen that walks you through the process, storage for 256 fingerprints and 300 user-defined 4- to 12-digit codes, double verification mode, entry tracking, 2 mechanical backup keys.
Has above average Amazon Reviews.