I would not recommend it!!! They can not be out of water for more than a few seconds or they will die!!!! I have two myself and pick them up very fast to put them in another container when I clean their aquarium. The salt from your skin is not good for them either so even when you pick them up very quickly you need to wash and rinse your hands very good before handling them!!!!
Well, you shouldn't but if you do, ve very gentle and get them back in water very fast and make sure your hands are clean, they're sort of like fish and they definatly need water so take precautions!!!
Yes you could and it will not hart them but be very careful or they will jump jump Away! Julia
By taking really good care and love or by giving them there food that they like