i'd suggest putting it in a squeeze bottle. when it comes in the glitter container, you have to scoop it out and its pretty slimy and goopy. it'll stick all over whatever spoon your using and you'll have to clean it off. i put mine into a big paint bottle that i cleaned out, so now i just squirt it straight into my plastic before i heat it, and no mess!
but then how can you measure 1-2 tablespoons? well i do different batch sizes and tablespoons have a ton of variance in them. so i weigh everything on a scale. pyrex cup on scale, tare it, plastic to desired weight (about 31 grams per oz), tare it, hd additive to desired weight.