Armour pieces could potentially include Cowboy boots + hat. Unsure if two helmet pieces would work but a bull skull would make a pretty cool looking SVA helmet that's in a Wild West themed crate.
My main concern are the tool(s) but there could be old fashioned tools such as Tomahawks that may act as a multi-tool (unless there are more ideas for axe/shovel/pickaxe), and a Bowie knife for the sword.
Perhaps an American bison for a pet?