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*Awesome* work overall on your design. That was also one of the best videos I've ever seen-- great flow, good editing, and surprisingly short for what it covers. Kudos, and thanks for sharing this!
3D Design Class
Model the Lamp Arm
Create & Assemble Lamp Components
Introduction to Fusion 360: Design a Lamp in an Hour
Oog, that's a tough one, as any solvent that works on the glue will also work on the paint and/or the layer holding the dry wall. Your best bet is to use the heat gun and a _plastic_ scraper (the kind used for applying spackle-- cheap but "bladed"), along with the snow shovel trick: do a _light_ spray of WD-40 on the scraper, letting it dry (5-minutes), and then gently wipe off the excess. This should help keep the glue from sticking to the scraper while you use it-- you should be able to just remove the glue with a paper towel periodically, and when it starts sticking after a while, you may need to re-apply. You could do this with a metal scraper, but plastic is less likely to damage the wall surface. Good luck!
Nice work! The best impromptu (hard)wood stain I've used to date is Kiwi shoe polish-- dab it on and then buff it to a high shine using a cotton cloth-- it brings out the grain beautifully. You can then coat it with glossy finish sealant to seal in the color (and help make it more watertight). If you do, I'd recommend using painter's tape to protect the metal USB plug. Oh, and be aware that using black shoe polish will actually get you a mostly *purple* stain-- brown tends to work best.
Circuit Board Design Class
PCB Concepts and Materials
Tools and Materials for Arduino
Welcome to Arduino
I'm surprised nobody else has noticed, but the "phone" pictured above in this instructable is NOT a landline phone-- it's a Cisco IP phone, which is a VOIP (voice over IP) phone. I mention this for clarity, since if you have one of these, if your power goes out, so does your service. In fact, if your internet connection goes down (even if the power is still on), you also lose your service. And since VOIP is usually powered via POE (power over Ethernet), it's a completely different spec than described for this instructable.I personally wouldn't try this for a large number of reasons, as there are many more (and safer) ways to charge your phone during a power outage.