I - 10 combinations
299. ice = cold + puddle, cold + water, puddle + solid, solid + water
300. ice cream = cold + milk, ice + milk, milk + snow
301. ice cream truck = bus + ice cream, car + ice cream, ice cream + wagon
302. iceberg = antarctica + ocean, antarctica + sea, arctic + ocean, arctic + sea, ice + ocean, ice + sea
303. iced tea = cold + tea, ice + tea, snow + tea
304. idea = astronaut + astronaut, baker + baker, butcher + butcher, doctor + doctor, electrician + electrician, engineer + engineer, farmer + farmer, fireman + fireman, hacker + hacker, lumberjack + lumberjack, pilot + pilot, sailor + sailor, scientist + scientist, surfer + surfer, swimmer + swimmer, warrior + warrior, engineer + light bulb, human + light bulb, light bulb + scientist
305. igloo = cold + house, house + ice, house + snow, house + snowman
306. internet = computer + computer, computer + earth, computer + net, computer + web, computer + wire
307. island = ocean + volcano, sea + volcano
308. ivy = grass + wall, plant + wall