I would like to build some really good forms, also interactive ones. Any macros, links, plugins you can recommend?
In Confluence there are add-ons you can use directly: https://marketplace.atlassian.com/search?application=confluence&category=&cost=&hosting=&marketingLabel=&q=forms
Our clients usually use EasyForms or ConfiForms:https://marketplace.atlassian.com/plugins/net.artemissoftware.confluence.easyforms.EasyForms/server/overview
And a Cloud option would be Wufoo: www.wufoo.com