How to create the curved firework which is at the end of the Disney's movie-intro?
I am talking about this (video link): https://youtu.be/k9bUTfFF3_4?t=20
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$\begingroup$ Hello, you probably need to use an object that moves along a curve a drop particles $\endgroup$– moonbootsAug 12, 2021 at 8:57
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$\begingroup$ Yes. But as the "object" moves along the curve, the curve keeps glowing for some time...also the same for particles. $\endgroup$– CoolCoderAug 12, 2021 at 8:59
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$\begingroup$ you can create a long subdivided cylinder, give it a Curve modifier so it follows along, give it a Displace modifier, also a material with a mix of transparency and emission with a noise as factor, so that it's not completely straight $\endgroup$– moonbootsAug 12, 2021 at 9:21
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You could create a long cylinder for your trail, with a big spherical head, give it the following modifiers: Subdivision Surface, Curve, Displace (to give it a bit of bumps), also give it a particle system with an icosphere as particle in order to make it emit sparks:
Here is the kind of material you can give to your trail: a mix between Emission and Transparent, with a Noise as factor, also give it gradient transparency on X so that it fades:
File here: 
