With Lilith Dragons blood always seems to be the preferred incense when I ask. I’ve had success with rose incense as well.
Funnily enough, I got some white rose sachets from dollar tree for the home and I kinda feel like her influence was involved. Lol
When I’ve gotten flowers there’s usually been a pull towards lilies.
I’ve offered coffee in the past, usually black but at times with just a little bit of sugar (as that’s what was preferable according to what I was feeling).
Dark chocolate, buying a nice candle from somewhere using my intuition to grab the right one.
I’ve made food offerings like a slice of cheesecake. One time I was compelled to buy an apple which I cut in half and smeared some honey on with some drops of wine.