Having to buy the manuals separately after the fact isn't the same. It's all about the unboxing experience and having something to read on the bus or walk home or when you receive a game on Christmas Eve before you get home to play it (we open gifts on the 24th not the morning of the 25th like some places)
That said if I could get manuals for all of my Switch games, I might.
Good idea sending one to Elliot btw. But you've now given him a difficult choice. Each time he builds a new custom Game Boy or receives one in the mail he has to choose between the official dev test cart and yours. And there's a pretty big geeky coolness factor to an official dev cart.
personally I would prefer a good old cardboard box though I actually made a few replacement cardboard boxes myself, might want to make a simple print at home template for people who buy your cart
Again you get what you pay for, its like buying a S series for $300 but its only 1440p native, if you want true 4k, gotta get the X model for $500. But yea you right, when moms buying it anyways, you gotta stay cheap.
I here ya there, I have too many myself, and have hard time letting them go, since most of mine I've modded at some point. Anymore I just play Switch on the go, seriesx at home.
I'm designing my own entertainment cabinet for my man cave, to store all my systems, then I'm also designing a power supply/HDMI switcher so I can switch to whichever system I want, and power it also. Already picked up the cabinet board, but tinkering with my drawings before start
But yea, I have frogger arcade cabinet that I gutted and put a Pi4 then Pi5 into, but it never gets played much anymore, should sell it. Even when the kids come over, they don't want to play on it, just the xbox. TMNT and Simpson's arcade is still so fun on it, esp w 2 players.