The minimonkey baby sling (€25) is a multi-purpose carrier to be used as a front carrier, on the hip and in the playpen! (order)
Available in 7 great colours to use in multiple ways for 0-2 year olds (12kg):
0 - 3 months
Banana (foetal position) 
Baby can be carried in the
sling in the banana position (demo) from birth. The baby hears the
heartbeat of the sling wearer and is in the fœtal position, reminding
him of the cozy womb he just left. The sling is also great for discreet
breastfeeding. (top tip!)
Playpen Hammock
The baby sling can also be used as a hammock in the
playpen. Gently rocking the hammock to-and-fro will put baby to sleep.
Also helpful for babies with colic. The sling can also be used in
larger playpens - in this case it should be hung diagonally in a
corner. (tips)
3 months +
Kangaroo
Once baby's back is stronger, the kangaroo
position can be used. In this position baby sits facing forward in the
sling with feet forward and up high. Baby's head leans against the
sling strap. (Demo and tips)
Belly 
In the belly sit the baby/toddler sit with their belly against the
wearer's belly. Baby's legs come out the bottom of the sling. The sling
is a 'seat' with the sling also supporting baby's back. In this
position the older the child, the lower the sling can be on their back
as they increasingly need less back support. (Demo)
Toddlers up to 12 kg
Hipster
Once the toddler's back is strong enough you can use the hipster
position. In this position the clasp sits on the chest so that the
sling will sit just above your hip. The toddler sits in the sling with
legs coming out on either side of the wearer's hip. (Demo and tips)