In 2004, LEGO released 10 Promotional sets across 4 subthemes, all of these sets have been retired. Subthemes for that year included Easter, LEGO Brand Stores, LEGO Japan Magazine, and LEGOLAND.
Most valuable 2004 LEGO Promotional set
4212852 Easter Egg Blue $133.31
Most owned 2004 Promotional set
4212847 Easter Chick in Egg
10 sets

4212838 Easter Chick

Theme / Subtheme Promotional / Easter
Year 2004
Pieces 62
Availability Retired
4212838 LEGO Easter Chick
promotional
Value $58.73
Annual growth 17.8%

4212847 Easter Chick in Egg

Theme / Subtheme Promotional / Easter
Year 2004
Pieces 99
Availability Retired
4212847 LEGO Easter Chick in Egg
promotional
Value $77.96
Annual growth 19.1%

4212850 Easter Egg Orange

Theme / Subtheme Promotional / Easter
Year 2004
Availability Retired
4212850 LEGO Easter Egg Orange
promotional
Value $65.10
Annual growth 18.3%

4212852 Easter Egg Blue

Theme / Subtheme Promotional / Easter
Year 2004
Pieces 178
Availability Retired
4212852 LEGO Easter Egg Blue
promotional
Value $133.31
Annual growth 6.8%

Mini Stanley Cup

Theme / Subtheme Promotional / LEGO Brand Stores
Year 2004
Availability Retired
Mini Stanley Cup
promotional
Value $78.77
Annual growth 3.2%

LEGO Heart

Theme / Subtheme Promotional / LEGOLAND
Year 2004
Pieces 58
Availability Retired
LEGOLAND LEGO Heart
promotional
Value $33.19
Annual growth 4.0%

Cat

Theme / Subtheme Promotional / LEGO Japan Magazine
Year 2004
Pieces 10
Availability Retired
LEGO Japan Magazine Cat
promotional
Value $23.06
Annual growth 11.1%

Ostrich

Theme / Subtheme Promotional / LEGO Japan Magazine
Year 2004
Pieces 10
Availability Retired
LEGO Japan Magazine Ostrich
promotional
Value $16.06
Annual growth 13.5%

Spinning Top

Theme / Subtheme Promotional / LEGO Japan Magazine
Year 2004
Pieces 12
Availability Retired
LEGO Japan Magazine Spinning Top
promotional
Value $20.59
Annual growth 1.0%

Snail

Theme / Subtheme Promotional / LEGO Japan Magazine
Year 2004
Pieces 8
Availability Retired
LEGO Japan Magazine Snail
promotional
Value $16.14
Annual growth 10.3%