1.) House Name
House of Janitor
2.) Emblems/Animals/Symbols. I'll do multiple of the same thing and simple stuff (3 lions, counterposed griffons, a moon and some stars) but not much more complicated than that.
Bucket and mop. Possibly a plunger.
3.) Colors (for shield and symbols)
Brown, yellow, green.
4.) Shield Division (examples: http://www.yourchildlearns.com/div_examp.htm, will also quarter or whatever)
Chevron inverted.
5.) House Words (optional)
vir labrum passim