Powerful home remedies for cough, cold, flu, fever, sore throat

Hi, My kids suffer from a cough, colds and fever quite often. Would like to share some home remedies which have worked to relieve them. I'm sure they would be helpful to someone. Also adding some which I have collected around the web

1. Steam inhalation
2. Kadha - similar to hot beverage made of lemon, cinnamon, dry ginger, black pepper, honey etc
   http://www.thehealthsite.com/diseases-conditions/ayurvedic-kadhas-or-desi-decoctions-for-cold-cough-fever-indigestion-immunity-k0215/
3. Hot water bath to relieve chest congestion
4. Salt water gargling to sooth sore throat
5. Chicken soup
6. Hot milk and turmeric
7. Indian gooseberry to prevent colds
   Please add any more home remedies you may know of.