quantum
-------
http://www.vjquantuminfo.org/
http://alumni.imsa.edu/~matth/quant/index.html


domino computer
http://www.pinkandaint.com/oldhome/comp/dominoes/

water computer
http://web.media.mit.edu/~paulo/courses/howmake/mlfabfinalproject.htm

water computer 2
http://www.bowdoin.edu/~garnick/gallery/wateradder/

water computer 3
http://www.nzpca.org.nz/megabyte/2001/02/art02.htm


tinkertoy computer and other machinations
by ak dewdney
(also wrote planiverse)

The Pattern on the Stone
by daniel hillis


http://www.rci.rutgers.edu/~cfs/472_html/Intro/TinkertoyComputer/TinkerToy.html

rope and pulley chapter from dewdney
http://freespace.virgin.net/nigel.mercier/apraphul.zip
again
http://www.csd.uwo.ca/faculty/akd/index.html

worb language, brownian motion
http://www.catseye.mb.ca/projects/worb-2000.0619/doc/worb.html

babbages analytical engine
http://www.fourmilab.ch/babbage/contents.html


computations with a deck of cards
http://crypto.cs.mcgill.ca/~stiglic/Papers/cards.pdf
http://citeseer.nj.nec.com/niemi98secure.html

and of course, dna computers, membrane computing, quantum computing, 

not really related,
http://citeseer.nj.nec.com/romer01smart.html