Here are my assignments if it helps you decide what to do with your open slots:

CRTL+1: sp_who

CRTL+2: sp_lock

CRTL+3: sp_who2

CRTL+4: sp_spaceused

CRTL+5: sp_monitor

CRTL+6: sp_tables

CRTL+7: sp_columns

CRTL+8: sp_stored_procedures

CRTL+9: sp_helptext

CRTL+0: select * from