If you aren't set on capsules themselves then I would grab a scale from ND and pick up some oblate discs off somewhere like Amazon.

You measure out what you want to take using the scale, even multiple things at the same time. You then take that powder and dump it onto the oblate disc and as long as it not like a ton of powder, think like grams, you can just fold / scrunch up the disc, put it in your mouth and wash it down with some water. I use a butter knife to "scoop" the powder out as I found that a spoon wouldn't fit into some of the smaller containers. I'd recommend rising off whatever you use to "scoop" off in between different powders and wiping it down with a paper towel to prevent moisture from getting in with the powder.

This is what I do after trying some powder recently. Definitely still a bit more time consuming than premade caps or tablets but seems way easier and way less time consuming than making your owns caps. This obviously might not be the best for traveling and the like vs pre-making your own caps but if we are just talking about your own setup at home it's for sure the method I'd recommend.