Police officers found supplies of the drug ketamine when they raided a house in Boston, Lincoln Crown Court was told.
Officers went to the property in Clifton Road in April 2011 and seized 63.9g of the drug.
Phil Howes, prosecuting, told Lincoln Crown Court that ketamine - a strong drug used in human and animal medicine as an anaesthetic - was found hidden behind the pedestal in the bathroom.
More drugs were found in the bedroom of Cheynene Kohut who lived in the property.
The mobile phone of her half-brother Edward Langford was later analysed by police who found what appeared to be a list of people who owed him money for drugs.
Langford, 24, of Windsor Bank, Boston, admitted possession of ketamine with intent to supply on 21 April 2011 and possession of a small amount of cannabis for his own use.
He asked for two further drugs offences to be taken into consideration.
He was given a community order with 12 months supervision and 150 hours of unpaid work.
He was also placed on a night time curfew for six months
Kohut, 27, of Clifton Road, Boston, admitted allowing premises to be used for the supply of cannabis between 13 and 22 April 2011. She was given a community order with a three month night time curfew.
Neil Sands, for Langford, said he had a drug addiction and needed help.
Anwar Nashashibi, for Kohut, said her role was simply to allow her half brother to sell drugs while staying at her home.
“He had nowhere else so she let him stay there. She made no money from it and she is not a drug user herself.”