It depends on how well I know the hostess & what the season/occasion is.
I've done candles, chocolates, a loaf of sweat bread from a local bakery, Christmas ornaments, Christmas cookies in a decorative tin, flowers, small plants, coffee, a tin of teas, a small package of Penzey's spices, seasonal liquid soaps from Bath & Body, etc. Years ago, someone once told me, "It's all about the presentation" & that's what I tell my daughter now. LOL! So I always nicely wrap/package whatever I'm giving w/ pretty ribbons & embellishments.
Last year at Thanksgiving, DH's brother-in-law & sister-in-law hosted Thanksgiving at their new house. We brought them a glass pitcher of white sangria.