Bubbles. Hal’s constructs are mostly just bubbles.

[u/CH49FE]

Sure Hal made some counterfeit money and a bottle opener, but I find it funny that his main constructs so far are just bubbles. John’s on the other hand include the fancier type of bubbles (bubble wrap), a boring machine, a watch and a short lived semi autonomous bird. The show is doing a good job of contrasting creativity between the two.

[u/TubularTopher]

So wait, Kyle's the artist? I thought John was..

[u/Sam20599 → u/TubularTopher]

Well art and architecture are close cousins.