Which items to bring from home and which ones to buy locally in Norway?

In general, you can find almost all Indian food items, Masalas, Spices and Packed food items in Grønland Turkish and Pakistani shops. Of course, the price will be 4-5x the prices in India but that is applicable to all the things in Norway, the most expensive country in the world.

However, the following items may be very difficult to find or extremely expensive in Norway, and it is therefore recommended that you bring your own:

1. Medicines (10 to 100 times more expensive than at India). Also, most of the brands that you use may not be available here.
2. Prescription glasses (Bring an extra pair, if you are coming for long term). The cheapest one may be around 500NOK, at least, if you buy one locally.
3. Dental work/Treatment. Get it done at your home. Dental treatment is not covered by Social Security and it may be wiser and cheaper to fly back home, if you develop some dental complications here!!
4. White Light/Bulbs/CFL. It is simply not available here and it is advisable to buy them from home if you don’t like Yellow or Off-white light. (Remember the electrical socket should be E27 – European socket. It is different from the one used in India)
5. Electric Bulbs greater than 70Watts – It is banned by the law, to sell bulb more than 70 W. In general, it is difficult to find bulb more than 40W in the normal markets. Bulbs between 40W  - 70 W are taxed more, and the cheapest 70W bulb, that I have found is about 50 NOK.
6. Maggi Noodles. Yes, the beloved old Maggi is not available, apart from one or two  shop, where availability is not guaranteed. Though, you can find lot of other noodles variants here, if you have no special inclinations towards Maggi :)
7. Alcohol and Cigarettes. Under the Norwegian Custom laws, you can bring upto 1 L of hard spirit and 200 cigarettes, duty free into the country. General prices at a local shop here ~ 80 NOK per pack of 10 cigarettes (cheapest brand) and 300-400 NOK for an average brand of whisky.
8. Electronics. Unlike US, the prices of electronics tend to be quite expensive here, so bring necessities from your home country. In general phones (except iPhone) are expensive and should be brought from home country. 

Personally speaking, I would recommend that you buy winter clothing and shoes from Norway itself, since they can withstand the local harsh weather conditions. Also, locally bought items can be replaced easily, if you are not satisfied with them. Most warm clothes and shoes in Norway will be water-proof/resistant, wind-proof and snow-proof, but at least 2-3x expensive than the ones bought in your local country.