This site has lots of props in 3ds ( i think untextured, i could be wrong. The site is in italien (i think), so i 'm not going to try to translate the different categories. It's definently worth a visit.
http://web.infinito.it/utenti/k/killjoy/res/3dmodels.htm
Frensh site with lots of 3ds props.
http://perso.club-internet.fr/falcon1/modeles_3ds/3ds.htm
This site has has 3dobjects, highres textures etc. Scroll down
http://www.ffranceschi.com/midima/ffeng012.html
This site has free trees. Don't forget to visit the gallery.
http://w1.520.telia.com/%7Eu52015187/
This site has models in 3ds format in various categories.
http://www.klicker.de/models.html