You can acquire more MODs directly from the raptor paddock. Simply enter the paddock, and select a raptor at the bottom of the screen. Then, select the rarity of MODs you would like on the right. You will get to spin a prize wheel where you can win individual MODs of that rarity, or a card pack which contains a variety of the MODs! Each time you spin the wheel, the cost to spin will increase up to a maximum amount for the day. Each day the cost will then reset to its minimum setting.