great suggestions on here - I had HB with ds2 and was supprised how little I needed
We used duvet on lounge floor with decorators sheet from Focus over top (really thin plastic one that cover sofa and duvet) then old double duvet cover (red ) over top - all old towels collected from family before hand, and a lovely fluffy new towel for baby (warmed on radiaitor)
Other essentials for me were - bucket - I get v sick during transition
MW asked for angle poise lamp or torch in case she needed to do stitches (didn't need any tho - phew)
dh moved cars when I was sure I was in labour as parking by us is rubbish and made sure we had space for MW
Packed hosp bag, baby baby and ds1's over night bag
Also (and only because my brother is a paramedic and not because I'm a pesimist!) its really useful to have written directions to your house for the ambulance that dh or MW can just read out over the phone if you live somewhere complicated to get too (down farm track for example) and make sure you have a clearly displayed house number - makes MW's finding you much easier espec if you have quick labours (in fact you should all have this my bro recons vauable time is lost with him running up and down roads looking for the right house number - espec where children/babies are conerned)
and as everyone said loads of yummy food, bisuits and tea for MW's (and take out pizza meal for them too) DVD's for early labour, birthing ball and Tens m/c
Not much mess at all - second having an empty washing machine - MW's cleared up and gone within an hour of ds2 arriving - but it was 4pm on a Sunday
also put out clothes you want to change into after birth in bathroom (with old towels you are using and maternity pads easily to hand) I ended up getting in shower then shouting to dh to get me everything I needed whilst he was trying to dress ds (got him a bit stressed )
ooohhh getting all excited about dc3 arriving now!
good luk with everything x