Here are a few broad suggestions but since it is not exactly known what causes colic, there is no one quick fix that works for every baby:
1. Keep a diary of when your baby cries, along with activities like napping, feeding and playing. Look for patterns, which may offer a small clue to the solutions
2. If you’re breast-feeding, try to eliminate dairy from your diet along with other foods such as onions, cabbage, cauliflower, spicy foods, caffeine, beans or other gas producing foods. Before eliminating diary from your diet be sure to check with your doctor first. Your doctor may or may not want you to eliminate dairy from your diet or he/she may want you to take calcium supplements
3. If you’re bottle-feeding, do your best to reduce the amount of air that your baby swallows. Try using a curved bottle or a bottle with collapsible disposable liners
4. If your baby seems to have a lot of gas, make sure you burp him or her frequently
5. Don’t overfeed your baby. This may actually make the colic worse. Stick to your normal feeding routine
6. If you’re bottle-feeding talk with your doctor about changing formulas to a low-allergy type of formula
7. Take your baby to a part of your home that will provide less stimulation. Bright lights, noise, or a large number of people may further aggravate the colic
8. Wrap your baby up snugly in a blanket while walking around in a smooth steady motion
9. Go for a walk in a stroller or for a drive in a car seat
Give your baby a warm bath or place a warm water bottle on your baby’s stomach. Be sure the bottle is not hot!
10. Try rocking in a rocking chair; or swinging in a baby swing
11. Give your baby a gentle tummy massage
12. Some baby’s like hearing rhythmic sounds such as a vacuum cleaner, dishwasher, or cloths dryer and will calm down when they hear these types of sounds
Hope this give an idea about what kind of activities might help the baby and feel free to come up with your own activities as well if your baby reacts positively to them