The two green base plates that serve as the covers, can be removed and used as building bases. This has been used but is still in great shape with
Vintage Lego Lap Table Storage Tray Travel Carry Case 1998 Purple
Lego Folding Building and Storage Table. 26 x 12 tall x 11tall. No cracks or dents.
Lego Lap Tray Table Building & Storage Bins 1996 Vintage w/ Folding Legs-Clean
1998 LEGO LAP Tray Table w/Storage, Red w/Sliding Green Bases, 20 x 12 $30.00 - PicClick
I have 2 of these.
Lego Lap Desk Sliding Base Plates Carry Handle Storage (Vintage: 1998)
LEGO VINTAGE LAP Desk Storage Carry Case Travel Tray Table
LEGO Vintage Blue Storage Carry Case Building Green Base Plates
50 Must Have LEGO Organizing and Storage Solutions – All About Tidy
LEGO Vintage Lap Desk Storage Carry Case Travel Tray Table
Lap Desks in Desk Organization
LAPPER LEGO TABLE Top Toys Folding Storage Lap Desk Duplo Lego White $75.00 - PicClick