Anything that moved on wheels or tracks. The German Army was always short on transport and tanks. Also the 76.2mm AntiTank gun.
The boring stuff, raw materials; iron, coal, oil, rubber, food. The final train of raw materials going to the Reich from the Soviet Union rolled across the boarder the night before the War started. The USSR and Germany were big pre war trading partners. Remember Germany even traded the incomplete cruiser Lutzow for raw materials and hard currency.