I have 5 kids (my youngest is 29 months old) and they never saw my wires until I showed them. I kept the excess loops tucked into my pants. The rest were hidden by my shirt. The monitor I wore could hook on a belt, be worn like a fanny pack or like a small purse. I found it most inconspicuous worn around my neck and arm diagonally across my chest.
I wore a t-shirt, put the recorder on and then put a hooded zip-front sweatshirt over it. No one ever noticed and I did a lot of errands while I was in town (it's a small town and I saw many people I knew)
I even wore it to tae kwon do without any problems. It bounced around a little but it wasn't too bad.
The wires did get tugged on a little with various activities but none of the stickers ever came off. If they do come off, just write it down that you had to reattach the lead and what time it came off. Reinforce it with tape and it shouldn't come off anymore.
Love and Prayers, Kelly