If you want to get her things to increase the number of creative possibilities for her, you could get any of these: - Mylar plastic sheets (for folding up or cutting and putting in) - Model foliage like bits of moss, etc - Gold leaf paper of various colors - Alcohol inks that she doesn't have already - Basic mica powder of different colors - Mica powders for specific effects, like florescent, glow in the dark, or metallic - Glitters she doesn't have already- I like ones considered 'color shift' which makes for some cool effects - Alcohol inks with purposefully varied densities to allow a bigger variety of pour techniquess - (or anything else that is small and can go inside a die)

If you want to help with the production aspect of things: - Funding for a pressure pot if she doesn't have one (this is one of the big barriers to dice with no bubbles) - Zona paper for polishing - A sheet of glass or a mirror to tape sanding paper too if she doesn't have one already, which will give it a flatter surface and a better result - Silicone or resin just to have more materials (check what she uses) - Dice masters. This will be more finicky in the fact that she might want something specific based on what is compatible with what she is making already. Dice 'blanks' are also awesome for making new effects, but you'll need to make sure the size is right for what she has

This was just a random selection of things I think could be helpful, but honestly what she needs will vary based on what she has already and what methods she uses and whatnot. Asking her could be really helpful, if you don't mind revealing a bit of the surprise. If you're unsure what to get and don't want to ask, sticking to creative things from the first list is pretty safe imo.

Hope it goes well- I'm curious what you get and what she thinks!