Making Rice Krispie Treats - for modelling/cake decorating

This rice treats recipe will make the equivalent of a 6" round cake. Ideal for making the head of a bust cake.
I used:-
125g rice cereal
250g Marshmallow
2tsp Water
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Music - "Danger Storm" Kevin MacLeod (incompetech.com)
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[@jennyjones52790]

Could you convert grams to cups? I'm having trouble finding this information

[@CakesForShow]

Sure. 4 and a half cups rice cereal, 3 cups Marshmallow

[@jennyjones52790]

@@CakesForShow thank you very much!

[@divm8559]

can led lights be put in rice crispy toppers ?