Make sure you check all the drawers and such in both rooms. Check all tight spaces (check any printers, mine seem to be attracted to them). I've heard good reviews about spreading flour or something similar on the floor at night so if it does come out you can follow the tracks.

I lost a kingsnake for 2 weeks once only to find it in a printer which was in a loosely taped box. Good luck and I hope you find him. Baby snakes can be tricky to find.

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0.0.1 Green Water Dragon
1.0.0 Tokay Gecko
1.1.1 Bearded Dragons
0.1.0 Columbian Red-tailed Boa
1.0.0 Yellow Ratsnake
0.0.1 California Kingsnake
0.0.1 Black and White Tegu
0.0.1 Chilean Rose Hair Tarantula
1.0.0 Evil Budgie