DS Lite USB Charger Cable - HKToyz.com - Import games, consoles & accessories
http://www.hktoyz.com/component/page,shop.product_details/category_id,4/flypage,shop.flypage/product_id,19/option,com_virtuemart/Itemid,1
"You can stick this in a small carrying case, and charge your DS Lite from any USB connection."
DS Lite Battery Upgrade 1200 mAH - HKToyz.com - Import games, consoles & accessories
http://www.hktoyz.com/component/page,shop.product_details/category_id,4/flypage,shop.flypage/product_id,21/option,com_virtuemart/Itemid,1
"The original battery from Nintendo is 1000 mAh, so you will gain up to 3 hours of extra battery life with this one!"
DS Lite Airform Pocket (Black) - PD - HKToyz.com - Import games, consoles & accessories
http://www.hktoyz.com/component/page,shop.product_details/category_id,5/flypage,shop.flypage/product_id,125/option,com_virtuemart/Itemid,1
"The Dragon DS Lite Airform Pocket is lightweight and slim, yet can hold several games, headphones, cleaning cloths, and other accessories. A detachable wrist-strap is included for carrying and convenience."