How would the Future Gadgets in the Steins;Gate visual novel be made in real life?

I finally finished the Steins;Gate visual novel 4 and a half years after starting it. The story hits hard.
Copyright Links(Video):
Footage:
-Game footage: • Steins;Gate
-More game footage: • Steins;Gate Visual Nov...
-Future Gadget #1 IRL: • Steins; Gate에 등장하는 미래가...
-Prop example: • Like a Dragon Gaiden -...
Images:
-Future Gadgets: steins-gate.fa...
-Nerf: NERF Disruptor Elite Blaster
-Remote: en.wikipedia.o...
-Bamboo-copter: en.wikipedia.o...
-Lego: Retro Camera
-Compared drone: Judgment(epic game)
-Meter: en.wikipedia.o...
-Standard vacuum: Eureka Powerspeed
-Canister vacuum: Panasonic MC-CG902
-Hairdryer: www.nytimes.co...
-Future Gadget #6 effect: • How To Create A Cool B...
-Okabe with phone: myanimelist.ne...
-Mayuri :( picture: steins-gate.fa...
-Metal: minecraft.wiki...
-IBM 5100: en.wikipedia.o...
Music:
-Laboratory(Steins;Gate)
-Walking on Sleeping(Steins;Gate)
Copyright links(Thumbnail):
-Image from Steam page: store.steampow...