Yes.
Apple has an area on its website to order replacement accessories that originally came in the iPod package.
Prices and products are as follows:
| Accessory | Price (USD) | Shipping (USD) |
| Wallplug | $17.00 | $6.95 |
| Firewire Cable | $19.00 | $6.95 |
| Headphone | $17.00 | $6.95 |
| Power Adapter | $49.00 | $6.95 |