The apparatus of the invention includes a framework which in the embodiment of FIGS 1 and 2, is constructed of {HEAD ~ elongated, rigid rods} of {TAIL ~ metal} or plastic, including base members 10, upright members 12 and transverse members 14 
The apparatus of the invention includes a framework which in the embodiment of FIGS 1 and 2 , is constructed of { HEAD ~ elongated , rigid rods } of { TAIL ~ metal } or plastic , including base members 10 , upright members 12 and transverse members 14
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH