"Uncle Zebulon's Will" step-by-step solution by pjg
For game version 2.0 / 960416
Takes about 100 moves.
Comments and points are given in ()

N
Get scrap
S, E, E
Get letter
Read it then drop it.  (5/5)
E. Get lead
S
X desk then open it
Get book then read it. (5/10)
Drop book
Get green, paper, ball
N, N.
Get carrot
Open cupboard
Get blue
Look in the ball
X blue then get silver
(for fun, try sneaking past the Demon without taking the coin)
S, U
Get brass
Look in the ball
Open crate then search it
Get box then open it
Get red then drop box
D, E
Search chair
Get bottle, wand
Save "mirror"

Look in the ball
(water scene, this is an endgame clue)
Look in the ball
Point wand at carrot
(notice the stars)
Eat tomato (5/15)

Read sheet
Look in the mirror
Point wand at mirror (10/25)
Drop wand
Look in the ball then drop it
(no more clues in the ball)

N
Look at flask
Read scrap then drop it
(now we know what the liquid does)
Put silver in flask
(for fun, try the gold, copper, and lead also)
Get iron

W
Get scroll then read it.
Drop it
X mechanism
Get gold
D, S, W, W
Drop all but blue
W, N
Drop blue
S, E
Get lead, copper, iron, red, gold, green lens
Look at sheet
Look at brass
(we have all of the clues)

Put green lens in green bottle (5/30)
Put red lens in bottle
Put gold in bottle
Put lead in bottle
Put copper in bottle
Put iron in bottle
W, N
save "dog"

Get all from bottle
Put gold on stand
X dog
Put red in eye
Left (5/35)
Put green in eye
X left ear
Turn left (5/40)
Turn right
G. G. G. G. G
(remember what the paper said?)
Z. Z. Z (15/55)
Enter hole
save "end"

Throw lead in water (10/65)
Throw copper in water
Throw iron in water (10/75)