Evi,
  I have found finger cots in my local Wal Mart; this was a regular, not
super Wal Mart.  They were in the section with adhesive tape, bandaids, etc.
Sorry, can't help with gavage tubes.  Good luck.
  Do not take the above as an endorsement of WM.  I am presently mad at them
because they seem to have discontinued my favorite animal crackers (their
store brand), which tasted like a lemon shortbread cookie.  They have
replaced them (in a fushia-colored box) with a pale imitation tasting more
like cardboard.  I am very distressed and plan to write a complaint letter.
My family think I am crazy for being upset, but they ate them when I brought
them home!  A woman at my local super store (only place which stocked them)
suggested WM had probably found a cheaper supplier.  I'll say they did!

Sara Reuning in Bristol, TN, who's feeling deprived and at the mercy of big
business.
P.S.   Don't know if letters to WM help, but my ped. friend got annoyed at
the large numbers of new patients who were coming in w/ icky battery breast
pumps from WM, and wrote, asking that they be removed from the shelves.
Will be interesting to see which abm company will jump in to fill the void
(if one is created).  I don't expect to see Medela, because they're NOT
CHEAPER!!!