the new app folders in iOS4 are great to get your apps organised, however by default a new folder is named after the app store category of the first app inside – now how can you spice up those folder names a little?
apart from choosing a distinct name (beware names longer than 12 characters get truncated!) you have 2 options:
1. for some nice graphics, get glyphboard onto your iphone and copy graphics across into the folder name field;
2. if you fancy more detailed graphics download this free emoji enabler from the appstore – after install start the app and it explains how to get the icons setup systemwide as additional language in the keyboard. btw. these can also easily be used in SMS, MMS and emails;