"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Now that your head is swimming with ideas, check out the DIY mermaid Halloween costumes we've curated ...

If you're looking for a fun, low-prep activity that’s packed with sparkle and sensory magic, this mermaid slime recipe is a must-try. It's everything sparkly, stretchy, and shimmery that kids love, ...