Make money in your pyjamas? One enterprising group of pupils has found out how to do it.

Welwyn Hatfield Times: Pupils at St Michael's Primary School dressed in their onesies and slippers to raise money for litter pickers. Picture: Danny LooPupils at St Michael's Primary School dressed in their onesies and slippers to raise money for litter pickers. Picture: Danny Loo (Image: Danny Loo Photography 2018)

St Michael’s Woolmer Green primary school decided to hold a “onesies, dressing gowns and pyjamas” day last Friday February 23, asking for donations at the gate for every child - and teacher - who opted into the comfy apparel for the day.

Slippers were the order of the day in place of trainers as soon as the kids reached their classrooms.

“It was quite a cold day so we were all toasty in our onesies!” said head teacher Jan Martin, who also wore a onesie that day.

“A lot of the teachers joined in.”

Welwyn Hatfield Times: Pupils at St Michael's Primary School dressed in their onesies and slippers to raise money for litter pickers. Picture: Danny LooPupils at St Michael's Primary School dressed in their onesies and slippers to raise money for litter pickers. Picture: Danny Loo (Image: Danny Loo Photography 2018)

The pupils raised a total of £241 from the initiative, which was entirely the brainchild of the pupils’ own School Council.

The kids even designed posters and hung them at the school gates to advertise their wheeze.

The money raised was more than enough to buy their litter-picking kits, which will help the children tend to their play area as well as a limited area outside the school gates.

“We do get some rubbish as we are on the main road,” said Mrs Martin.

Welwyn Hatfield Times: The pupils advertised the initiative with their own poster designs. Picture: supplied by St Michael's primary schoolThe pupils advertised the initiative with their own poster designs. Picture: supplied by St Michael's primary school (Image: supplied by St Michael's primary school)

They also have a say - “within reason!” according to the head - in how the remainder of the cash will be spent to improve the playground and its equipment.

“They almost have a wish list,” said Mrs Martin. “It gives them an incentive to do other fundraising again later.

“We do a lot of charity fundraising but it’s also nice that they do a bit of fundraising for themselves.

“I think it’s lovely that they’re given a voice.”

Welwyn Hatfield Times: Pupils at St Michael's Primary School dressed in their onesies and slippers to raise money for litter pickers. Picture: Danny LooPupils at St Michael's Primary School dressed in their onesies and slippers to raise money for litter pickers. Picture: Danny Loo (Image: Danny Loo Photography 2018)

The School Council is made up of Year 6 representatives Maddy, Tommy, Zach, Gracie, Teddy, Katie, Poppy, Jonathan and Henri, led by co-chairs Olivia and Archie and secretary William - with Miss Tobin representing the school staff.

But maybe Miss Tobin and Mrs Martin should keep an eye on these smart young thought leaders - one of the last suggestions to come from the council was that the pupils and teachers swap places for the day.

Mrs Martin said she told the pupils: “‘Maybe after the SATs!’”