The ornamental design for a knifestand, as shown and described.
1. Knife stand
1.1: Front
1.2: Back
1.3: Top
1.4: Bottom
1.5: Left
1.6: Right
1.7: Reference
The broken lines in reproductions 1.1through 1.6and at the base of the knife stand in reproduction 1.7illustrate portions of the knife stand forming no part of the claimed design.
The broken line showing of the knives in reproduction 1.7is for the purpose of illustrating environmental subject matter that forms no part of the claimed design.