Whizz fruit powder and sugar together in a coffee grinder until fully combined. (You can also use a food processor, but it won't be as finely ground.)
Fold over the bottom of a paper straw.
Pour powder into the straw until almost full, leaving room to fold over the top. I used a rolled up piece of paper to do this, but you could also use a small funnel.
Fold over the top of the straw.
Hand to someone and wait for their smile!
Notes
You can adjust the ratio of sugar to fruit powder to whatever sweetness level you are comfortable with.You can also add a drop or two of food coloring if you want brighter colors.