I have been wearing a mask and flippers. I have been using an oxygen tank for 20 minutes.
I have been scuba diving.
I have been wearing shorts and a t-shirt. I have been using a broom for 10 minutes.
I have been sweeping the floor.
I have been using a needle and thread.
I have been sewing.
I have been wearing an apron. I have been using a wisk and a pan.
I have been cooking.
I have been wearing mosquito repellent. I have been using a sleeping bag.
I have been camping.