cleric lvl 1: doom, doom, doom, a few blessings (about 3-4 for whole party), and maybe cure light. doom is very useful, its -2 to everything after all (THAC0, DMG, saves), no save against it (does not stack tho). 1-2 remove fear, and a sanctuary or 2. maybe command, dunno if its useful.
lvl2: tons of chant, i want one for almost every stinkin fight. its great, even tho it takes long. DUHM for Ano or other fighting clerics, maybe silence? only sucky spells avail for druids

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lvl3: animate dead, miscast magic, dispel magic, 1-2 cure disease for party, and a few summon insects. cure medium to fill up.
i never have problems using my lvl3 or lvl1 slots (and 2 with cleric), but i would trade the lvl2 druid spells for almost anything.