This is what I voted for, but to be honest I wish I could go back and change or add to my vote. I totally missed the noiseless chainsaws. Everyone would benefit from tree pruners, including the workers. On the darker side, serial killers would appreciate it as well. Perhaps it makes no noise while cutting wood, but lets out a piercing scream for anything else, like arms and legs. Are chainsaws used in butchering animals? That may make an unpleasant job worse.
real androids and
intelligent sexbots - these have some overlap. I would replace "sexbots" with "companion bots" Sometimes it would be nice to have someone or something to talk to without boring them or inadvertently insulting them. So I would appreciate the companionship more than the sex, but "sexbot" should be an option. I am not everyone one and I am certain there are some young people out there that might enjoy a sexbot.
portable houses - This would be the most awesome thing I could imagine, this and areas in towns and cities where portable housing could be erected without fees. It would be nice if portable housing could have a way of generating its own energy. Also a mechanism for handling biowaste. I think it is referred to as dookie in one suggestion. I don't think we should get rid of dookie in total because it can be very useful. However, a portable house with a family and a new born, can you imagine a world without diapers, pampers, and nappies? However, if it were a pill, it would likely end up causing cancer, or a fringe group would say it caused autism. From a practical point of view, a butt hole without poo would be a life saver (exaggeration) for people with bad backs and have problems reaching back their to wipe. However, my android companion could be very useful there. In real life, I have a bidet and I wish the rest of the U.S. would adopt bidets, even if they were the simple turn the knob, spray the rear kind. I have one in my basement and sometimes I prefer that to my fancy one on the main floor. Perhaps portable housing that could be connected as modules would be useful. No. I'm going full dream wish here. A TARDIS. Not necessarily the space/time travel part, because as humans we would very quickly mess that up, but the bigger on the inside than outside part.
star-trek-style food replicator would be a nice option for a portable house. Option, because I'm 100% certain there will be people that will decry it being artificial. Just look at people flipping out about the Impossible Burger or Lab Grown Meat or GMO fruits and vegetables. Of course anything we consume there will be some concern that it will affect our health.
I am not sure where the water source for a portable house would come from. I am thinking it terms of everything being free because I am thinking of the homeless. Enter the politician, not me, who might say "why should some jobless homeless lay-about have a portable home nicer than what I have that I had to pay for?" This I would reply, perhaps with a bit of hostility, that there is another use for the poo processor. It could be called the PPP. Not the Point-to-Point Protocol or 155 other meanings behind this
acronym, but the Political Poo Processor. "Information" goes in and the real meaning behind that information comes out. Or the PDP, not the Pocket Data Protocol or other meanings from this
acronym, but the Political Dookie Processor. Perhaps there is overlap with the
brain amplifier idea?
Some of these already exist.
phonograph record optical scannerself-tying shoes - On one hand we have slip-ons. I recently bought a pair of Sketcher Slip-Ons because I have really bad knees. However (! !!), boots are more difficult to slip on. I don't wear boots, but I know people do for fashion or for work. Self-tying would be a boon for boot wears, or an android/companion bot would be useful as well.
There is a healthcare theme in the list. I did not vote for these, and I am not 100% sure they are good ideas, but it's like anything. Just because it not something I necessarily agree with, that should not prevent others (are you listening politicians?).
calorie-free cholesterol-free fat - there could be push back because that use to be a thing, but it gave people the runs and maybe/possibly could cause cancer. I don't have a problem with it as long as we take responsibility for it. In other word, anything created by humans may be flawed and when we find out it is not perfect and will kill us...
machine that automatically heals all disease - that could be nice as long as immortality is not the goal. I'm not sure homo sapiens should be immortal.