I'm on a disability pension. What I use are the Johnson and Johnson round clear containers that hold cotton buds. They stand about 7cm tall. Filled with $2 coins it holds approx $220, $1 coins fill it to about $95 to$100. I have one for every denomination. Every couple of months its nice to have an extra $300 odd to splurge with. Wahoo
Apart from the sheer weight I think those inoperable tins with $2 coins would have to hold somewhere between $5,000 - $10,000 at least, so long as my mathematics hasn't let me down.