Oh yea i atually want to get a sensitive plant! Been meaning to get one of those for a long time.
Not Growing Up!
Interesting flowers, & many should be perrennial in your area.
(Assume from your post you are wanting something for the outdoors.)
Could try gigantic veggys, like massively huge pumpkins & such.
Or maybe some things not quite so hardy but interesting, like cotton plants,
something tropical like a bananas or Plumeria (common name Frangipani), cacti (which actually flower nicely), or giant Redwood burls perhaps?
How about a mushroom growing kit?
Or if you are really bored...
a packet of instant Triops or Sea Monkeys!
I have had a few of these things when I was young, and they are interesting to say the least.
(Although many were not even available, back when I was a kid.)
In fact there's a lot of interesting garbage... er... gifts out there, just use your imagination!
Yea some things are a bit silly, but there is a lot to learn & experience in raising,growing & caring for even the simplest of living things.
Good luck with your choosing!
By the way, Mimosa Pudica (Sensitive Plants) will not survive the winter, however they may seed themselves & return on their own the following year. They do get a bit "insensitive" when growing outdoors, as the repeated winds & movement make them somewhat unresponsive. I have also noticed them producing some vicious pointed spikes when grown very large, but they are super easy to grow & reseed generously.
carnivorous plants of the world -- unite!
"Blessed are the cracked….
For they are the ones who let in the light."