Gravel ofc. Just imagine being able to provide every construction site on earth with cheap gravel with no cost at all. I'd be the first billionaire on earth who didn't fuck other people over to be absurdly rich.
3 for sure. Depending on how teleporting into other objects works, and how fast you can spam it, you could get some serious work done with a power like that.
The empty container depends on the definition of "container" and "empty". If a house is a container for people it's easy to rob when empty. If you have to be looking at an airless vacuum it's dogshit. Otherwise I'm sure you could make money with a creative gambling scheme.
Gravel for life, like an infinite bucket full? Or the typical "for life" shit where you just get one trailer full dumped in your driveway every year for 60 years. Probably an overrated pick.
Teleporting is almost certainly the best pick. Is there a cool down? Do you keep momentum? Can it be in any direction? Does it take the same effort as walking? If you can spam it at the speed thought, you're now flying. Even with a CD you could be a world class athlete in a lot of sports. Or just do simple stuff like reach a high shelf or teleport out of handcuffs.
A manga artist would find a way to make one of these the most op power in their entire universe. "I can fill anyones lungs with gravel with just a thought" or " i teleported 5 cms into you and severed a nerve in your spine that paralyzes you for life"
Being able to see inside empty containers has its uses because you can always check if you can see into it and know something’s in it. Knowing IF something has contents can be plenty useful.
Number 7 might let you cheat at some carnival/gambling games. Which of these 1000 boxes has the million dollars in it? The one I can't see through, of course!
Teleporting 7 inches still sounds kinda badass, would be very useful in a fight or you could just stand and repeatedly teleport to recreate that OK GO video.
I feel as though there is money making opportunity in 8. The language is dead? Nobody alive who can speak the language, so I'd have more or less free reign to profit off of being the only person who could speak it.
If I grow a second nose, will it also be stuffed up? If so, I choose teleportation. I know it's only 7 inches but that's enough to get around most doors so it's still useful.
Speaking a dead language would be cool. Maybe teach it to others and read into the history, etymology and people of it. Talk to historians and what not.
"What is the meaning of toaster?" Is a powerful question. Either able to push buttons and push levers down if the intent is toasting bread, or making a heat coil glow with the intent of cooking bread. Either way, the nuclear industry would be ratically altered. Theres also just a industrial toast factory secretly sponsored by big "nuclear" deticated to making, shipping and toasting bread as slowly as possable. With propaganda for toast simmar to "Got Milk?"
Who defines what is a toaster? Could the whole universe be considered one since it heats up bread? Yes, it does some other stuff in the process but so do some other toasters.
I think 3 is the most useful. You can use it to reach things just out of your height range and maybe as a party trick. I'm sure there are other uses for it too, given enough time I could probably think of some other uses too.
Control the toaster in a smart home that's connected to the system and hack into the security system to kill the inhabitants and hand over the building to homeless and mutual aid organizations #eattherich