I'd go with Apollo 11.
There is one indica that is giggly. But I don't know if it is able to be bought. It is called Oger.
Not Oger's Kush (I think Oger is in OGer's Kush though) Taste similar to OG kush but not as kushy. Just lemony dank.
But the high is super giggley. More then any sativa I've smoked. I know that wierd. But I swear. I'm sure it's a hybrid. But it's sold as an indica.