John Deere Loader 410 with Bucket for 4110 4x4 HST | eBay
This one's a little pricey. They rarely show up for sale and generally sell quickly if they aren't total junk or outrageously priced. You can buy a new H130 with the mounts for a 4100/4110 for about $4000. 200cx's show up for sale occasionally but the mounts will run you about $1000 so you need to find a pretty good deal to make it worthwhile unless it comes with the correct mounts.