I really enjoyed listening to Robin Holtie (@MrHoltie). He offered some really fresh and fun ideas on making (mostly in intermediate). From using Micro:Bits to create a Harry Potter style Sorting Hat to a Self - Contained Mars Space Station to support the reading of Weir's The Martian to Makedos in math, he offered some great ideas I had not heard before.
He also introduced me to Destination Imagination - program "that teaches "21st century" skills and STEM principles to kindergarten through university level students through collaborative problem-solving challenges." It is a 9-month program, it is $105 to register and about $7 per student for the competition (going to finals means going to the US so prices increase there). Totally something to check out for class or as an after school club.
You can find inspiration in Robin's Slide Deck.
Also, I sat beside my friend Laura Collins who is such an inspiration to me when it comes to coding and making (esp with littles) who told me about Klever Kutters to use when cutting cardboard.