I've been using buckets so far, with success
Sadly, I have given up on that.
Buckets are great in theory, for sure.
But I had tons of contamination, low yield and had to use a lot of harmful chemicals (alcohol or bleach) to clean and disinfect the containers after use.
Now, I use grow bags.
They're very cheap, I can sterilize them in the pressure cooker and pack in way more nutritious substrate for way higher yields.
Another plus-point is that I can already include the grain spawn and injection port, so I don't have to open up anything for the inoculation.
That allows me to work 100% sterile, even without a flow hood. I just flame sterilise the needle and push in my LC.
Contrary to my initial believe, they're way more convenient and less wasteful.
Consider them if you get problems with buckets.