Glad to help. Something plastic the same size also works. But not a metal screwdriver, usually they have been magnetized enough that tiny ball bearings will stick to them as you try to slide out after putting the bearing in the grease.

I also use the paddle to scoop out grease from the tub and deposit it in a bearing cup, then trowel it smooth before putting in the bearing balls. A bit neater than trying to use my fingers. Make sure the paddle stays clean so you don't contaminate the tub of grease. Doesn't apply to grease in a tube, but it's usually the same price to buy a tub that holds 5X as much. Any wheel bearing grease (rolling contact grease, not sliding contact like for steering linkages) is fine, and automotive bearing grease is way cheaper than dedicated bike grease. But in recent years I have been using the opaque light green marine trailer wheel bearing grease, used on trailers that get submerged to launch or recover a boat; says waterproof, but most greases are, they don't dissolve with water, but a famous local shop (in rainy Seattle) that specializes in IGH service, they recommend the stuff, but I don't know if it inhibits rust better than regular auto grease. Didn't find at the auto parts store, but did find at the RV supply shop at a good price. Sta-Lube (oh, says New! Improved! since I bought in 2018):