To really play up the cooperation-competition dialectic, do four of these setups, with prizes for the group of sixteen who can finish the game the fastest (with some other consolation prizes). Then on top of that, have another group of 64 on the other side of a wall in 4 groups of 16 playing Double Dash LAN matches (this will require 32 Gamecubes and 32 TVs). Do this massive thing at E3 or PAX or an anime con or something and have the two groups of 64 compete to see who can raise the most money for charity from the people watching.
Schedule it for 2016, the 20th anniversary of the N64 (wait, really? wow).
Call it "Two Decades of 64" and have half the people doing it be older and half be younger.
Total materials required:
4 big TVs, 48 medium TVs, 0 - 4 Wiis, 48 - 52 Gamecubes, 16 Game Boy Players, 64 - 128 Gamecube controllers, 0 - 64 Game Boy Advances, 16 - 80 GBA-GCN Link Cables, 32 broadband adapters, 32 LAN cables, 4 10BASE-T Hubs, 32 copies of Double Dash, and 4 copies of Four Swords Adventures. And about 70 gallons of soda.
I'm thinking this would be a very inefficient way to raise money for charity.
Maybe if it was on TV and streaming live, and if all the stuff was donated by Nintendo? And then any of the stuff that wasn't broken would then be donated to Child's Play, and the stuff that was broken could be sold on eBay as memorabilia?
I like that dance pad idea. Could you sort of do something a little like that on the Gamecube with the DDR pad? I think the pads correspond to buttons. You could hold a controller in your hand while on the dance pad and just use the controller for the stick and the pad for the buttons. And I think the DK bongos may have corresponded to buttons too, so with the multi-control on the Game Boy Player, you could do something where you have one person on the pad, one on bongos, and one on a controller, and they all work together. Or just one person with bongos, controller, and pad.