We had a wishing well too as Cara and I have been living together for ~3.5 years now, don't need extra house stuff. A couple of the people on my dad's side were real traditional though and insisted on a physical present, but most people these days are fine with a wishing well, even if it is essentially just paying for the cost of their meal. I think we ended up with about $2k on the night from ~50 guests, but that was blown away by my uncle who couldn't make it because he got offered some extremely lucrative work over in Thailand, so he sent us $3k - the instant that money cleared, our home-loan deposit fund started :D