In 2005, a British jeweller made the world’s most expensive tea bag to celebrate the 75th birthday of PG Tips.

The bag was studded with 280 diamonds and worth £7,500.

Pete Harbour, spokesman for PG Tips said: “As it’s our 75th birthday, we wanted to do something special to remind people just how much they love the great British cup of tea.”

Designer Wonsik Chae from south korea has created “lighting bag”, a light which imitates (you can’t drink it) the form of a tea bag !

If you put the Lighting Bag in a cup of chemical intermediate, the tea bag will burst into flames, and then the cup is lighting.

“Consisting of a cup filled with a chemical intermediate and a bag containing fluorescent molecules the light works through a catalyst of this chemical reaction.”