The paddles are a novelty item that were sold primarily at Western anime conventions in the 2000s, where they were used by attendees as props for cosplay and photo ops.
Others used the paddles to spank cosplayers and attendees, sometimes non-consensually; by the early 2010s, their possession and sale had been banned by most conventions due to their misuse for harassment and as weapons.
[1] By 2005 the companies were selling an "upgraded" version of the yaoi paddle, featuring "a more aerodynamic shape", a lacquer finish, and laser engraved text.
[1] Yaoi paddles gained a level of popularity among some anime convention attendees as a novelty item used as a prop for cosplay and photo ops.
[4] While it reached its fundraising goal of £1,800 on its second day, the campaign was pulled after Hen Da Ne filed an intellectual property dispute with Kickstarter, accusing the artist of "blatantly stealing our design".