ok, i am by no means a good house keeper or flylady etc but i have learned a few things.
keep things in the room or as close as possible to the room that they will be used in. for example, my bathroom is downstair with the hotpress directly opposite so i keep the dcs vests and PJs in a plastic drawer tower in the hotpress. it is very handy at bathtime. all bedlinen is stored in a plastic underbed box in the room that it belongs, so ds1's is under his bed, mine is under my bed etc.
keep on top of dishes and washing and everything else can wait. so a wash done a day, washed , dried, folded and put away and dishes done after every meal (or put in dishwasher if you have one)
dont collect your post from the box until you are actually ready to deal with it. ask your dcs for any letters from school as you are collecting your post. open it all at the same time over the bin so all junk and envelopes go straight in. have a box/basket/intray with envelopes, stamps, chequebook and pens near to the bin for the stuff that has to be paid/posted/responded to etc write the cheques, sign the forms and put them all in the relevant schoolbag/handbag etc so that they can be posted/returned the next day/time you leave the house.
sit down and work out what things need to be paid in cash every week. lift this amount of money from the bank and sort into envelopes with the name of the bill/activity/fee, the amount and day it has to be paid on the front. have a box/tray where these are stored in day order. put them in the relevant bag/schoolbag the night before they are due to be paid. for example, my son has afterschool club fees and scouts on a monday, hurling on thursday and football on saturday. it has saved me loads of time running round the house looking for £2 for this 5 minutes after we were due to leave the house.
there are more, i'll think on it and get back to you.