Obviously pram and carseats are a must . buying 2 convertable ones will save you time/money. They last for years.

Somewhere for babies to sleep, we used a moses basket until our son was 6mths old. but we bought our cot when pregnant,

Swings or rockers a must til they can move around...

Check out ebay for bargains and twin strollers etc. also for clothes, coz they grow soooo quickly Goodluck with the pregnancy