This was a little tricky.

I sent myself each post card, printed the insignia in color, glued them on the different "houses" poem, laminated them, punched a hole, put gold braid thru it.

They'd be sorted by picking one out of the hat.

NOW I find an easier way. Join the webmaster community at harrypotter.com, and they'll give you a page of shields to use.

What the hat says:

You belong in Gryffindor,

Where dwell the brave at heart,

Their daring, nerve and chivalry

set Gryffindors apart.

What the hat says:

You belong in Slytherin,

You'll make your real friends,

Those cunning folk use any means

to achieve their ends.

t the hat says 

What the hat says:

You belong in Hufflepuff,

Where they are just and loyal,

Those patient Hufflepuffs are true

and unafraid of toil.

What the hat says:

You belong in Ravenclaw,

If you've a ready mind,

Where those of wit and learning,

will always find their kind.