Thanks for starting the contest, I wanted to test myself out here and I must say it is harder than it seems, hop I haven’t done any doubles!!!!

Money – Bell
Money – change – time –bell
Money – draft – schedule –bell
Money – contract – ring –bell
Money – computer – tower – bell
Money – van – donkey – bell

Fish – Nun
Fish – lake – superior – nun
Fish – divine - vow - nun
Fish – act – prayer - nun 
Fish – shell – habit –nun
Fish – seal – chastity –nun

Nail – Rainbow
Nail - photo - monochrome - Rainbow
Nail -colour – newton - Rainbow 
Nail - art - reflection - Rainbow 
Nail – bar  - cocktail - Rainbow 
Nail – bed - pot - Rainbow 
Bitshares – gingin9110