The wonderful scrying pool makes a fun game mechanic. Roll dice and see what the players encounter. Of course that includes tentacles!
Easy print if you get decent bed adhesion. If not you might consider using a raft.
I recommend zenithal priming with black and puke green primer. A dry brush of squidgy pink on the suckers and you're done!
I retrieved the Kraken tentacle and imported to 3d studio max. I added bones and a skin modifier so I could pose the tentacle. Added the base so it fits into the well and Viola!