You can cut up butter blocks into cubes and wrap them in parchment paper for smaller uses.

Randomly decided to do this one day and found it quite handy. Basically cut up those big butter blocks into 4 butter sticks, and cut each butter stick in 1/3. Then wrap them in parchment paper.

You can make them smaller or bigger if you want, personally we had these mini square parchment papers sitting in the drawer for years without use, so I decided to cut them to fit those.

I found it handy because you can just open it up super easily and directly rub it onto whatever you're buttering.

You can also leave it out in those "butter containers" on the counter that I've personally never understood the use for, since apparently butter still only lasts a few days at most in them. So even if it's not used up in a few days, at least you're not throwing out a bunch.