Calming herbs: lavender, lemon balm, lime (linden) tree But any herbal infusion is probably better than coffee (and often cheaper). Chamomille, green tea, fennel for example you might find in a shop, they are not necessarily indicated as anti-anxiety, but still better than coffee.

From my own experience, quiet indoor activities that involve sitting are not so great for anxiety. Moving, talking walks, being outdoors, especially in nature, work wonders. What grows in your area? Maybe the anti-anxiety medication is right there (happy to help with identifying the plants you find).