I personally don't hang jeans, I have them folded on shelves. If I wanted to, I'd probably get some wooden trouser hangers. If you want something similar to the janger, how about clip hangers or s-hooks?
Chrome Single Peg Storage Hanger - First Communion or Wedding Veil Clip Pk2 | eBay
10 x Laundry Garment S Design Stainless Steel Hook Pothook Clothes Hanger | eBay