Oh suzywong you are so lucky! That sounds right up my street.
A very amusing one I had when dd was about 2 months old, a white cell scan, where they take out loads of blood, whizz it around in some machine, take the white cells out and make them radioactive then infuse it all back into you....
Wasn't allowed to pick dd up for 24hours as was radioactive! Still at least was own blood!