Mine is either the 31140 Magical Unicorn or 31131 Downtown Noodle Shop. My unicorn set is currently built in the seahorse model because I love how stupid it looks. ❤️
I have Rivendell waiting to be built when I find room!
I really enjoyed the lighthouse, it's a fun build and I enjoyed the technical bits with the light and motors.
I'm not a huge fan of the large custom pieces that make up the base, but understand they were needed to encase the battery pack and motor whilst only taking up a single base plate.
76832 XL-15 Spaceship (Buzz Lightyear's spaceship). I really enjoyed the build and the minifigures. I got it for the cool looking spaceship, but it motivated me to watch the movie and I thought it was wonderful.
I finally got myself the 71741 Ninjago City Gardens, which is just an amazing build with lots of little details. Really looking forward to the markets already. I also got the Unicorn, that was pretty fun as well!
I liked the white rabbit set - mainly because of the cockatoo form. I also enjoyed the Balrog and Gandalf Lord of the Rings Brickheadz.
Of course, the sets I designed myself to go along with minifigures are always my favorites. For example, this scene where the orc and rocking horse girl from series 24 decided to switch places:
I'm currently building a carrot farm (for my 2 carrot guy minifigures and a farmer minifigure) and a nano scale city for my T-Rex costume guy to stomp through.
For me, it would definitely be the Lego technic BMW M 1000 RR. It’s an incredibly fun build, and because it’s 1:5 scale there is a crazy amount of detail. The one annoying thing is the enormous amount of stickers involved, but well worth it in the end.