I don't have a specific suggestion but this sent me to Amazon out of curiosity. I looked up mini spritzer bottles and noticed a few familiar ones: this is the type (or close enough) I see DE use for their samples, and I have in the past received hair gloss decants in bottles like these (ETA: forgot to say between these two types I preferred the long bottles; one or two of the others eventually leaked but these long frosted ones have never had an issue). You could also get this pretty amber bottle if you wanted to keep to the aesthetic and better protect the oils from light :)

I put it in little spray bottles like these. I spray a little on my fingers, rub it in. I just leave it, the oil will absorbed into your skin over time.