The "USED Hoya 72mm Pro1 Digital Protector Filter" would be ideal for environments requiring specialized filtration to protect sensitive electronics or circuits.
Hoya 72mm HD nano II UV
Hoya Blondie
Hoya 62mm Yellow Y2 HMC Filter
Tiffen 72mm Glimmerglass 2 Circular Polarising Filter
Fujifilm 72mm Front Lens Cap
Hoya 58mm HD II UV Filter