I need some ideas for a birthday gift - 5 year old twins boy and girl?

It really just depends what they are into. Here are a few ideas that my 5 yr. old niece has liked:

1. big arts/crafts sets (like make your own jewelry, stepping stone, painting, etc.)

2. outside toys if it's warm where they live- balls, jumpropes, tennis raquets, etc.

3. model kits for the boy if he likes building (cars, dinosaurs, radios, etc.)

4. crystal growing kits

5. educational video games like Leap Frog's Leapster (those are huge hits but pricier!)

6. bikes

7. train set for the boy (Thomas the Train is huge)

8. kids table w/chairs for them to sit at

9. kids little sofa/chairs that fold out for sitting & playing

10. a big kids kitchen set w/pretend kitchen

11. a large dollhouse

12. electronic reading systems like Tag/Leap Frog

13. Fisher Price's Cool School computer

14. computer games

this is a small list but hopefully it will spark some ideas for you! not sure about the balloon delivery- maybe try a local flower shop?

Get one of those indoor/outdoor small child sized slides (made of plastic) with a ladder and holes for footing to climb... If they already have one- try a build a bear gift card (one for each). You could get him a remote control helicopter (at Walmart) and her a cool doll- ya know just in case they aren't into the same things.

More information needed

Books are always a perfect gift for any age. Parents and kids love books!! Fun, not-messy, and EDUCATIONAL!!

how about their names done as hand painted wall letters to hang in their room(s)?

totally unique and totally creative.