I built a box out of 3/4" marine plywood with a top. I left the bottom open so it would be easy to level on uneven ground. The box was 30 inches wide by 24 inches deep and 7 inches high. I covered the box and top in outdoor carpet. This became the bottom step to provide a shorter step up to the TT mounted steps.
Our 16 year old TT and now our 20 year old 5th wheel we haven't needed any sort of stabilizers. I'm a big guy and the steps worked just fine and are stable.
The box can be turned over and carried in a storage compartment or the pickup bed to carry stuff in as you travel. I carry our portable BBQ in it.
If you are handy you could build this
http://www.doityourselfrv.com/simple-portable-rv-stairs/