That is a tough question because I don't know what you already have.
Personally, I asked for a $79.99 Inverter, Portable power, AC/DC, Compressor, Jumpstarter, Light Combo unit from Costco.
You could add the heavy duty floor mats ~19 and maybe some micro-fiber detailing towels from their and if you changed your mine on any of it you could always take it back to costco and get cash towards whatever else you choose. You could even add a case of beer to get you up to your price point.
Standard Toyo accessory wise: Door Sills and OBX pedals should be right around $150.