The MeTubes panel from QRPme is a panel of 10 prototype pads for experimenting with vacuum tubes. The panel has v-scores for breaking the panel into single tube pads. The pads can either be glued to a piece of pcb stock using superglue or mounted using screws and standoffs. The panel has provisions for several common tube types and a couple that are not so common: mini 7 & 9s, octal, compactrons and acorns.
Check out the entire line of QRPme paddyboards:
MePADSs for DIP ICs
MePADSs for SOICs