Thailand's famously entrepreneurial street vendors have spotted a duck-shaped business opportunity in the country's anti-government protests.

Yellow ducks - large and inflatable or small and wearable - have become a must-have mascot for anti-establishment protesters.

The demonstrators adopted the rubber duck as a symbol of the movement after inflatable ducks were used as shields against water cannons fired by police.

Now hawkers sell duck-themed merchandise of all kinds in areas where protests are being held.

Bangkok's street food merchants have also been quick to cash in, often arriving at protest sites before protesters themselves.

Street vendors have begun selling yellow rubber ducks after the unusual item became a mascot of the anti-establishment protests in Thailand.

Footage from the latest rally in the capital Bangkok shows stalls stocked with hundreds of different style ducks.

The demonstrators have adopted the rubber duck as a symbol of the movement after inflatable ducks were used as shields against water cannons fired by police. Vendors are now cashing in on the demand.

In the latest rally on November 29, protesters gathered outside the headquarters of the 11th Infantry Regiment.

The army was put under the command of Thai King Maha Vajiralongkorn in 2019. Activists claim it has taken a role in politics.

Groups then moved into the centre of the capital where they marched while carrying inflatable yellow ducks.

Thousands of anti-establishment protests have taken place in recent months across Thailand, including at schools and universities.

Activists are calling for sweeping reforms including a new constitution, the resignation of the prime minister Prayuth Chan-o-cha and reforms of the monarchy.