Trading Standards and Humberside Police found the products during searches of six businesses.
The Highway Code states drivers should allow at least a 6ft (2m) distance when passing a horse.
Analysis of David Drury's devices found evidence of "contact" sexual offences, say police.
Volunteer horse riders are helping Humberside Police have a more visible presence in rural areas.
Det Con Karen Smith died when her motorbike collided with a car near Thorngumbald in December 2024.
Police divers warn of hidden dangers under a bridge where young people are often seen swimming.
Police say motorcyclists are more vulnerable than car drivers, with 13 killed over the past year.
Emergency services were called to Little Coates Road, Grimsby, after a cyclist and a van collided.
Humberside Police take e-scooters off streets, but off-road motorcycles prove to be more elusive.
