I use a 300 chip set for my weekly cash game. Our blinds are .25/.50. I have 150 $0.25, 100 $1.00, and 50 $5.00. We usually buy in for $20.00, so the breakdown is twelve $0.25 ($3.00), seven $1.00 ($7.00), and two $5.00 ($10.00). Then, if someone wants to rebuy, I just give them four $5.00 and have them make change from someone at the table.