##wears: runsub isitme;
##push: runsub isitme2;
##get: runsub isitme2;
##shoots: runsub isitme2;

##isitme:
if $actor eq $target then disappear else end;

##isitme2:
if $actor eq $target then appear else end;

##disappear:
set $init_obj's host to $init_obj;
say 'msg',"[$init_obj] suddenly disappears!";

##appear:
set $init_obj's host to $actor;
set $init_obj's pose to "beside";

##rem Xianus, your reactions were simply
#push: itsme2;
instead of
#push: runsub itsme2;

I modified the itsme2 but your code would ahve worked just as well (well done!)

Now the next thing is the get the ring to react to a 'go' and make sure the $init_obj remains invisible at the ther end.

(or maybe react to an arrive as well)

Hmm I think we need a 'take' command that recognises the 'off' (take off the ring)

A command can only be a single word 'go,get,wear' but some commands check the second word and act differently. I think 'go' is one: 'go to the door' 'go the door' are the same.

There are probably others, I forget now.. maybe 'get' = 'get the cup' get into the cup' - maybe I have not coded this yet.. feel free to code the command called get'

As for whistle find the command called whistle supprisingly we already have a whistle! maybe you can meld the two together?