Reddit mentions of Coast Bethy Glitter Box Clutch,Multicolored (pink/red glitter)

Brown is pretty neutral so you're open to most options although I think soft colors, neutrals, or jewel tones would be best. I'd recommend something on the more formal side and since it's a holiday party you can't go wrong with a bit of glitz. I threw in some simpler ones too though.

Dark Burgundy or Brown & Sparkly

Metallic Brown & Sleek

Gold Glitter

Blush Pink & Jeweled

Gold, Jeweled, Vintage Inspired

Off White Satin

Black with Pearls

Yellow Gold & Embellished

Blush Pink Flapper Style

Green or Rust Velvet with Leaf Print

Metallic Dark Brown

Rose Gold Box