In retrospect, this seems pretty obvious, but you can shave off a byte or two in some cases. I didn't realize that it could work this way at first because ti-basic wasn't my first programming language and is the only one I've ever used in which ending parentheses can be left off.
When you want to check if a list or matrix item is equal to a value, you can switch the item to the right of the = operator and remove the ending parentheses and brackets.
For example,
If [A](1,2)=2
can be
If 2=[A](1,2
I'm not sure if this is documented somewhere on this site but I don't recall seeing it here.