Multi select box in MSCRM v1.2

The current controls which can be put on a CRM entity form are:- String- Integer- Float- Currency- Date/Time- Boolean- Picklist- Memo As you can see, there is no such option like a multi select box. Even within CRM you do sometimes need this. For example: Several contacts are receiving business gifts every now and then. You do not want the enduser to fill in which gifts they received in by hand,