see if  mother in law  can bag it!  they are   rather  pricey  now!  heh
heh!
In a message dated 9/23/2015 1:54:51 P.M. US Mountain Standard Time,
cube1 at 
charter.net writes:
On  9/23/2015 2:34 PM, COURYHOUSE at 
aol.com wrote:
  I really believe   a  person  would  make an  entire
interesting
 collection of  just  logic  trainers!
 we have a  couple of  the MINIVAC    trainers  too one I  keep under
 glass and the other   I  take out  for show and tell.
   
My mother in  law had one of those she used in her high school for extra
projects for  kids in her math classes.  Played with it when I was up one
Labor Day  weekend before my wife and I were married.
If that counts then so  should the Digicomp plastic slidy-toy-thing I had
as a kid.   ;)
JRJ