Items to sell a school fate for 50p

[Mary1935]

Hi my son and his friends are holding a stall for an enterprise day at school. They need to sell an item for no more than 50p but make a profit.
They planned on doing slime but it’s not been successful in the making.
We have 40 small pots they could use.
Any ideas - apart from cakes as multiple kids are doing that.
Thanks

Different colours of salt dough?

My ds bought a large bag of narcissi bulbs, and potted them up in twos and threes with some red & green parcel ribbon around. He got the pots from the local garden centre for nothing.
Are they selling to parents or other children?

Pick & mix bags?

Chocolate dipped marshmallows?

popcorn always made a very good profit when my DC did it.

Things that always seem to sell well at school fairs I have been to are just pots of sweets. Are the pots you have big enough to make 50p for a pot of sweets good value?

I think they must buy the sweets loose online or from CostCo or somewhere so they are making a good profit.

The bulbs sound lovely.

Sweets or popcorn. Kids don't want to buy bulbs.

Thanks all - yes it’s to other kids or parents. Yes sweets are good but due to health and safety they have to be wrapped!!
I will look at salt dough though.
Any more idea welcome.
Thanks

If you have access to an oven, crumpet, pitta or scone pizzas made a killing at our Enterprise day. The bases are ready so you just need to toast them briefly to melt the toppings!

Some beads and elastic in the pot to make a bracelet, if beads would be allowed?