I had a chain of 4-5 lds for a medium length. No tasks completed. I could no remember any of the tasks, so I practiced flying.
I had 2 short lucid dreams last night, and in one of them I had a short conversation with a dog:
[url]https://community.ld4all.com/t/ians-dreamworld-journeys-starting-anew/39235/110]
For the Creation team dream, we’re going to invent thunder-works. They’re like fireworks, only they shoot out lightning. 
For our team task, our team has decided that our cybernetic enhancements will aid flight. For our team advantage task, we are going the most direct route (but not necessarily the easiest route) of transforming into giant robots. The vote was quite close between these things and alternatives all week, but these things have a slight majority.
The consensus on my team seems to be travel to 50 years in the future.
Again a ND in which I used a pc and an old wool making thing that I don’t know the English name for (edit: Siiw tells me it’s called a spinning wheel). I also tamed a dragon. Is dragon an exotic animal? 
Got a medium lenght LD tonight (I’m estimating 15-20 minutes), my recall wasn’t the best since it was early in the night and when typing it down afterwards I was extremely tired.
I didn’t really perform any tasks, managed to fly a few times however, I did think about the task but had trouble spawning stuff so I just went with the flow. 
Once again. A short LD. No tasks. Gotta figure out how to make these dreams last longer again.
And HeHu: 15-20 minutes?? That’s a medium LD for you? 
I’m so jelly.
More KAG ~ Short Lucid Dream
Stats so far:
[spoiler]Short LDs: 6
Medium LDs: 4
Long LDs: 2
Chains: 5
Task 1:-E Parts I & VII | Parts III & IV | Part II
Task 2:-E Part II | Parts I & V
Task 3: ~ none ~
Personal Task: Spoke with Cardia.
[/spoiler]
Well I’m not sure about the definitions 
This was by far the longest LD I have ever had, they are usually ~5, I guess it’s a good thing lucid dreams never make wake up. 
The short/medium/long/longest definitions are relative the dreamer. 5 minutes could be short for one dreamer and long for another. If you feel you had your longest LD at 15-20 minutes, you should mark it as such, not medium.
I had a medium length ld. I used my cell phone, and talked to a stuffed animal, Idk if that counts.
Had a FLD yesterday in which I fed pokemons. Chikorita and bulbasaur. It was incredibly realistic, I made food appear in my hand and fed them. Also had a ND of using one of those old corded phones with the dial pad on the phone.
[color=olive]7/4/14
-FLD
-Used technology in a way it wasn’t intended
Made a mini motorcycle from a Bop It and massager in one, and an exercise ball. The Bop It/massager functioned as makeshift handlebars. Had a blast drifting and zipping through the store isles. Wish the mini motorcycle was an autobot too seeing how I would’ve completed another task.
-Saw my former pet
It was a bit strange, but hey it could’ve been worse.[/color]
So… a long LD. Looks like my SC tried to make sure I’d get points for something at least… the things I did do… I did multiple times. Sadly, I misrecalled other things and thought I did more than I really did… my “outdated technology” wasn’t really outdated and the task is to become a giant robot not fight one with a team member. 
Still, a pretty awesome LD here.
Giant Robots and Thorn ~ Long Lucid Dream ~ Task 3 Parts I & VIII LUCID CHAIN EARLY
Stats so far:
[spoiler]Short LDs: 6
Medium LDs: 4
Long LDs: 3
Chains: 6
Task 1:-E Parts I & VII | Parts III & IV | Part II
Task 2:-E Part II | Parts I & V
Task 3:-E Part I & Part VIII
Personal Task: Spoke with Cardia.
[/spoiler]
In the final dream here, I used a sword in a dream of the Middle Ages; I would think a sword is outdated in terms of weapons technology. That said, while your introduction to the task implies that technology needn’t be electronic, the subtask implies that it does need a power source, so I am unsure if this gets credit… although you then mention an abacus as an example, so I’m every kind of confused.
Had a medium length ld. I opened up a flip phone, there was a cd, and a doughnut inside.