One of the things people like to give as gifts is jewelry with birthstones. It is a more personal gift and usually very appreciated.
If you do a "Google" search for Birthstones, you will get many choices. With in the choices you will find some disagreement in what specific Birthstone that fits each month. To simplify things, I chose the list of Swarovski crystals. That fits better into my jewelry making anyhow. Most months are pretty much the same in each list. April isn’t a diamond but (clear) crystal. October has a few choices as does December and June. Other choices for October are Opal, Light Rose and Green Tourmaline. For December other choices are Turquoise and Light Sapphire. For June, Pearl is another choice.
Most chain maille jewelry can have Swarovski crystals added to make a birthstone piece. Of course you can make a bracelet or necklace of just Swarovski crystals with some spacers
Another idea is Family, Grandmother or Mother's bracelets. Having the color of each birth month of each child. Here is an example of one with the child's name and October birthstone, sapphire.
Think of the people on your gift list (remember, the holidays are quickly coming). Would someone appreciate birthstone jewelry? For some ideas check out my website at http://www.bevsjewelry.com/ and browse the selections available. You can design one of your own that will be special to the recipient.