I like this for two reasons.
If you stick with the shape in the photo and use the name, bath bomb, even the boys and men will like them.
If you want to vary it for the gals, you simply find a more girly "something" to use for a mold and call them bath fizzies or something equally appealing.
Color choices will also help you adapt the recipe for your gift list.
The instructions are very well laid out. The photos show you exactly what the texture of the mixture should look like along the way. She includes suggestions for molds.
The tute says that some of the ingredients are available at craft shops, but I am sure some can be picked up at your local drug store as well.
Be sure to read all of the directions. Maria clearly explains which products are safe for this type of use.
For other projects in my series, just look along the right sidebar for the label "Christmas Gift Projects." I hope to post only tips that do not require knitting, crocheting, machine sewing, tatting, embroidery, or any other skilled technique.
If you are feeling too crushed for time to make your own gifts this season, check my Etsy shop for items for your gift list.