Whole Fenugreek Seeds Available in 50g packs.

Small amounts of this spice can be added with other traditional gin botanicals to create subtle spice and gentle warmth in your gin.

Beyond the spirit and the juniper berries, you can feel free to experiment with whatever botanicals you like. Some of the most commonly used gin botanicals (after juniper) are coriander seed, angelica root, citrus peel and cassia bark or cinnamon – but feel free to raid the spice cabinet and herb garden. You could try bay leaves, rosemary, liquorice powder, lavender, cardamom, cumin, fennel seeds, lemongrass…pretty much anything you fancy!

Check out this link for some info on ratios and some recipe ideas. 
https://www.lovebrewing.co.uk/guides/gin-recipes-using-botanicals/