Building Tokens for Suburbia

Tokens to help identify special buildings in the board game Suburbia -- schools, airports, etc.

These buildings can affect scoring of other buildings in other neighborhoods - using these tokens should make these interactions easier to identify.

Based on my version of Suburbia (original version plus the Inc expansion, though I don't think that included any extra symbols), I have printed the following number of tokens:

10 briefcases (business buildings)
9 pencils (schools)
7 planes (air