creative yellow letter ideas?

[Nicholas Testa]

So I'll be mailing out a few yellow letters soon, but because of my budget the most I can do is something like 200 every month, which isn't much so I need to be effective with what I got. the postage is whats breaking it for me, at 49 cents a pop, it's not cheap!

What are some creative things you write in your yellow letters to get a response? I'll be using non standard envelopes and cards to stand out a little more, and everything will be hand written (since it's so few)

I'll be targeting absentee owners (non-landlord) and people behind on their taxes/ possibly mortgage.

Thanks!