npub1zt30rymrqvm3vtdxq4wnknpsy6arkzcttkehwqttympk7ww7ezfqqg0v09 (npub1zt3…0v09) I use forks (four around each bulb). It both lets me know where we planted them *and* deters the squirrels from digging them up.
My profile header photo shows my "fork garden" several months ago :-) We planted both tulips and crocuses in that area.
(The lampshade is protecting a baby honeysuckle plant because I didn't want to take a chance that the critters would eat the leaves.)