I’ve collected some great vintage tutorials for you:

Design a vintage car poster with grunge texture font and brushset in photoshop (PSD vault)
Designing a typographic concept poster (psdtuts)
Create a wicked worn vintage pop art design (psdtuts)
Create a vintage film style video using photoshop cs3 extended (psdtuts)
Craft a vintage fifties letter (psdtuts)
Vintage photo corners (pshero)
Create a constructivist [...]

Here are a pair of nice balloons for your website. In the zipfile you’ll find a png and psd file. The shapes and color of the balloons can be altered in photoshop…