Mazurka reports that
putting a coating of Crazy Glue on your Tam Angel can help protect its paint from chipping. Be careful, and make sure that the glue is completely dry before picking it up!
I have discovered that for my blue-with-silver wings Tamagotchi Angel, Wet 'n' Wild's "Bliss" nail polish is a near-perfect match for the paint on the wings... plus it looks kinda neat when your make-up matches your tam.
Hatching
Mad Cow has some interesting things you can do before/while hatching your tamagotchi at his Tamagotchi Club page
You can get the secret or "factory test Screen" by doing the following: reset your tamagotchi, or press the reset button in the back. Hold down and press button A (left) for about 3 seconds. Then press button B and then button C. This will test all of your pixels to see if they are working. Not very flashy, but a good way to scare any ignorant Tam lovers in your area ("Hey, why don't you try this cheat for getting twins? You do this, and this and... OH NO! You broke it!")
With the Ocean Tamagotchi, if you keep staring at the screen before setting the timer, the teenage fish Ototochi and Kingyochi swim past!
When feeding candy, look out for the bat! It will descend from the top of the screen, and if you don't chase it away, it will cause the Deeds meter to drop by one unit.
To chase away the bat, try:
Tapping on the tam
Yelling at it
Shaking it.
From personal experience, I can say that talking to the bat in a reasonable tone of voice and
singing Amazing Grace at it does NOT work.
Osuchi and Mesuchi tamagotchi seem to have a different food for every generation (once the parents leave). Vickie reports that the new Mori-no-tamagotchi ("Forestgotchi" or Tamagotchi Garden) has a variety of foods that alternate every day. The Ocean Tams, however, eat a steady diet of soft-serve ice cream cones and oden, a sort of Japanese soup.