If you like houseplants and only have room for a few, then keeping either Hoya halconensis or Hoya alagensis is a must!  They both grow without a care and the flowers are among the most beautiful in the Hoya world.  If they have only one drawback, it would be that they grow so rampantly, they must be started over every 2 years or so, just to keep them in check.  Then this will give you the ability to share them with friends and turn a negative into a positive.