Tenses

If I see a friend with a lot of shopping bags and I want to inquire in a friendly way what they have bought, should I ask: what have you bought? or what have you been buying? Are both possible without any difference in meaning?

If I want to know if my husband has ordered something that has been delivered and I want to ask in a neutral way could I ask "have you ordered something?" or "have you been ordering something?" without difference?

I am wondering if the continuous conveys some sort of negativity ( annoyance or accusation )in these cases.

thank you