[hcobb]

Astral Projection clearly allows for TK (at 6 ft/turn), but doesn't say one way or the other if Summon works. (You can't pull the snake out of your astral form and have it do physical effects.)

A wizard can send his snake, scout or summons through a gate or use Long Range Teleport for infinite range. The gate method allows for the search and snake retrieval of items up to 32 pounds. (I suppose, your reading of ITL 65 no doubt differs.)

The big limitation on TK is that there is no X-ray vision spell to use alongside it and you can't fire it off blind by the limits on thrown spells. (You can't use a summons to look around corners because this wouldn't let you target TK on anything the wizard does not himself see.)