1) Any suggestions on safe, 'everyday' items to use as buttplugs?

2) And as lubricant?

3) Would a pingpong (table tennis) ball with holes punched in and thin rope threaded through it work as a ballgag, as long as I don't bite down really hard?

4) When you use a clit clamp, does it really clamp the clit or just the hood? I've tried with clothespegs but it always seems to slip off the clit and just pinch the hood. Is it too loose, perhaps, or is how I am attaching it wrong ('legs' parallel to my labia)