In object maker, you can load basic meshes and build a twolegplace. Making meshes isn't easy.
In Object Maker, you can go to the "Mesh" tab and load:
BasicCone.mesh
BasicCylinder.mesh
BasicSphere.mesh
BasicCube.mesh
BasicRing.mesh
Just by using those and shrinking them and all that such, you can make a twolegplace.
However, if you want to see for yourself, a mesh making program, try:
AC3D
OGRE Blender
Hope this helps a bit. ;)