Those pens look great! I need to build some! I don't have an apron. I just bought a wire basket from a dollar store.I have deployed some of the wire pens I have been building over the past few weeks. I am restricting the guys from the gals. I feel somewhat like a Junior High School teacher at a dance… ruler in hand to maintain that 'safe' distance. The boys are not happy about the current living arrangements, but things will improve shortly, I do believe. I am using medium rabbit feeders and pellets and horizontal nipples for my water, all external to the cage. The pens are about 36 inches long, 30 inches deep and 16 inches high. I've made some smaller ones as well for sorting containers and such, never seem to have enough pens, coops, cages and such.I also have been looking at those egg aprons, you know the ones with the little pockets to tuck your eggs in? Anyone using one or have insight into same? Foggy and cold around here lately, this might be starting to get on my nerves. Best to all and your birds, RJ