You won't find one with Rdson=10ohm, so have to choose 8 or 12; I'd go with the slightly lower. If it's for a linear application like an amplifier or regulator of some sort go with the 8 so it stays in the ohmic region and doesn't saturate. If it's not in a feedback loop and depends on the particular slope of the BSS110 you're probably out of luck, but in a feedback loop no problem. If it's for switching purposes I'd also go with 8. If you need exactly 10 for some reason you can always replace the drain leg with a 2ohm 1/8W resistor.
VP2106 (12ohm, 250mA) on Mouser @ $.58; pin order is reverse of BSS110 so needs to be flippedIf you don't mind using a SOT-23 adapter, then you can find the BSS84 in SMD. (In fact, I just received 100 today from Mouser.) Perfect little jellybean P-ch MOSFET - I'll be using it to switch a power rail to 5 I2C devices including a display, so I can do a complete bus reset or power off during deep sleep. (The BSS84 may not work though; I just looked at the BSS84/BSS110 datasheet and it has a much lower Vgs which might cause problems.)