One group that contributed to the Woolsack project are the members of Ravelry.
One of the many features of Raverly are the Project Pages and it's possible to set each project so that the page can be viewed by anyone, not just members of Ravelry. Here are some of the wonderful cushions created by this group of people. The names of the makers given are their Ravelry usernames.
Cushion for Athlete - knitatoy
Cushion for Woolsack - metalhead
Woolsack Cushion - romain
Woolsack Cushion 1, Woolsack Cushion 2 - ginchyworld
Purple and Pink Woolsack cushion, Woolsack sheep, Forging of the Rings, Jack in the Gym, Woolsack 5 Lime & Cherry Swirls, Woolsack Cushion Lion, Woolsack cushion Shamrocks, Woolsack cushion Manx Aran - Wibseyknitter Paralympics Woolsack Cushions - greensideknits Woolsack Cushion - SueGill Woolsack Project Knitted Cushion, Woolsack Project Ripple Cushion - Sleeperwaking Woolsack Cushion I, Woolsack Cushion II, Woolsack Cushion III, Woolsack Cushion IV, Woolsack Cushion V, Woolsack Cushion VI, Woolsack Cushion VII, Woolsack Cushion VIII, Woolsack Cushion IX, Woolsack Cushion X, Woolsack Cushion XI, My Class's Woven Woolsack Cushion, Guild Woolsack Cushions (Cheshire Guild WSD), Y6 Residential Woolsack Cushion - talesfromtheplain Woolsack Winter 1, Woolsack Winter 2, Woolsack 2012 3, Woolsack 2012 4, Woolsack 2012 5, Woolsack 2012 6, Woolsack 2012 7, Woolsack 2012 8, Woolsack 2012 9, Woolsack 2012 10, Woolsack 2012 11, Woolsack 2012 12, Woolsack 2012 13, Woolsack 2012 14, Woolsack 2012 15, Woolsack 2012 16, Woolsack 2012 17, Woolsack 2012 18, Woolsack 2012 19, Woolsack 2012 20, Woolsack 2012 21, Woolsack 2012 22, Woolsack 2012 23 - evieandlily First Olympic Cushion, Woolsack 2nd Cushion - Montymouse Woolsack Cushions - Urieka