Exolegs/robot legs, like hypershell carbon x (wearaable exoskeleton), For perks, 10-30% jump and/or run speed. Other exo power mods for dif perks

fax machines in your lobby to draw on and send faxes to your friends, even when offline

community music competions (with ai entries allowed) to make cassettes to unlock (unlockable content maybe) vehicles with cassette players, like metal gear solid style casette system a bit.

little radio on etched statue playing crab rave or winners choice of song without copyright, like free to use....