It's arguably better than S3 of Trollhunters, but wouldn't work nearly as well if S3 of Trollhunters didn't exist. It's the crossover/"in-universe" feel that really makes 3 Below so much fun. ("Battle of the Bands!")
My favorite bits were when the supporting characters in Trollhunters got some more time to come out and play. I really liked that Señor Uhl got all protective of Aja and Krel against immigrant-prejudice. And the way they worked in Nancy "Nanna" Domzalski, in particular, made me laugh my guts out. As did the pairing of Luug with Gnome Chompski.
I think my fave in-joke, though, was the Edgar Wright "Cornetto Trilogy" homage gag of Stu going over fences, given that Stu is voiced by Nick Frost.
And yeah, I really wish we had more than just a S1 DVD of <em>Trollhunters</em>. But I'm guessing the DVD probably didn't sell that well, so they're not seeing a need to blu-ray it or S2 & S3, let alone do 3 Below.
https://www.amazon.co.uk/dp/B07VWMY5WM/ref=cm_sw_r_apan_glt_fabc_DPN6GWJ1V568E31FKAJ5
I recommend this :)
As the daylight amulet is based on an astrolabe (in the book its even described as an astrolabe too)
I'm on it thanks to the rave scene!
GLEDLOVES LED Gloves,LED Light Gloves,LED Finger Gloves,LED Gloves for Kids,The Gifts for 3-12 Year Old Boys Girl,Gloves with LED Lights of 12 Color Used in LED Party Birthday Outdoor Games(1 Pair/S) https://www.amazon.com/dp/B08ZD29JDM/ref=cm_sw_r_apan_glt_fabc_3AFTQRSVGGFF944HD4MG
Similar, but possibly not exactly what you're after: