Yeah, the “to” marking is great when there’s a bunch of rests, so it gives the performer a heads up well in advance of the next passage. Like, you’d hate to be sitting at the marimba, counting rests, and then suddenly realize you needed to move to the Temple Blocks when you flip the page! So “To Temple Blocks” is what you want when there’s a gap, while just “Temple Blocks” when the change is immediate.
Additionally, when the notation itself is clear (like the use of x noteheads on lines specifically) you can sometimes get away with only writing out the instrument change once. For example, I’ve frequently seen sus cymbal as x notes on the first ledger line above the staff. Mark it the first time, and then from then on, I know x notes on the first ledger line are always sus cymbal. Makes for a much cleaner part (though you might want to still mark it in the score).
That’s usually when dealing with multiple non-pitched instruments though, I can’t recall an example off hand where I was jumping rapidly between pitched and non-pitched instruments like your passage. Safest would be to keep the text notes, of course, though that’s more crowded. You could also gain more space if you skip the boxes.