Ok I looked up OpenWRT compatibility. I will start trying to find homes for
this stuff, but let me know if it's useful.
1 × Asus RT-N53
  
Don't think it supports OpenWRT
> 1 × Belkin N450 DB
  
Don't think it supports OpenWRT
> 1 × Linksys WRT54GL
  
Supports OpenWRT but maybe not worth keeping
around?
> 1 × Linksys WRT54GL v1.1
  
Supports OpenWRT but maybe not worth keeping
around?
> 1 × Linksys WRT300N v1
  
Supports OpenWRT
> 1 × Netgear WNDR3300
  
Supports OpenWRT
> 5 × Netgear WNDR4000
  
Supports OpenWRT
> 1 × Netgear WG311v3 (PCI card)
  
N/A it's a PCI card :)
--mark